EP3963608A1 - Électronique de puissance avec barres omnibus conçues de forme creuse pour le refroidissement direct de condensateurs, ainsi que moteur électrique - Google Patents

Électronique de puissance avec barres omnibus conçues de forme creuse pour le refroidissement direct de condensateurs, ainsi que moteur électrique

Info

Publication number
EP3963608A1
EP3963608A1 EP20718548.9A EP20718548A EP3963608A1 EP 3963608 A1 EP3963608 A1 EP 3963608A1 EP 20718548 A EP20718548 A EP 20718548A EP 3963608 A1 EP3963608 A1 EP 3963608A1
Authority
EP
European Patent Office
Prior art keywords
busbar
power electronics
busbars
electric motor
cooling channel
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
EP20718548.9A
Other languages
German (de)
English (en)
Inventor
Nicolai Gramann
Christian Nolte
Matthias Gramann
Eduard Enderle
Johannes Herrmann
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.)
Schaeffler Technologies AG and Co KG
Original Assignee
Schaeffler Technologies AG 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 Schaeffler Technologies AG and Co KG filed Critical Schaeffler Technologies AG and Co KG
Publication of EP3963608A1 publication Critical patent/EP3963608A1/fr
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G2/00—Details of capacitors not covered by a single one of groups H01G4/00-H01G11/00
    • H01G2/02—Mountings
    • H01G2/04—Mountings specially adapted for mounting on a chassis
    • 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
    • H02M1/00—Details of apparatus for conversion
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G2/00—Details of capacitors not covered by a single one of groups H01G4/00-H01G11/00
    • H01G2/08—Cooling arrangements; Heating arrangements; Ventilating arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G4/00—Fixed capacitors; Processes of their manufacture
    • H01G4/002—Details
    • H01G4/228—Terminals
    • H01G4/236—Terminals leading through the housing, i.e. lead-through
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G4/00—Fixed capacitors; Processes of their manufacture
    • H01G4/38—Multiple capacitors, i.e. structural combinations of fixed capacitors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00—Details of semiconductor or other solid state devices
    • H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
    • H01L23/46—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements involving the transfer of heat by flowing fluids
    • H01L23/473—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements involving the transfer of heat by flowing fluids by flowing liquids
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • 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
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00—Details of semiconductor or other solid state devices
    • H01L23/48—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor
    • H01L23/50—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor for integrated circuit devices, e.g. power bus, number of leads

Definitions

  • the invention relates to power electronics for an electric motor of a motor vehicle drive, i.e. a drive train of a motor vehicle, such as a car, truck, bus or other commercial vehicle, with a first busbar, a second busbar that is electrically insulated relative to the first busbar and at least one capacitor, the at least one capacitor having a plate-shaped receiving area with its first electrode the first busbar made contact with its second electrode and a plate-shaped receiving area of the second busbar.
  • the invention further relates to an electric motor, which is preferably used as the drive machine of a drive train of a purely electrically or hybrid-powered motor vehicle, with this power electronics.
  • DE 10 2016 218 151 A1 discloses an integrated electronics kit with at least one busbar, which is attached to a cooling component with the interposition of an electrical insulation layer.
  • a cooling device has at least one heat pipe that absorbs part of an amount of waste heat.
  • At least one of the two current rails is hollow, with the direct formation of a cooling channel.
  • the busbar that is already present is used directly as part of a cooling device without significantly increasing the total number of components or the installation space requirement.
  • the power density of the corresponding power electronics can thus be significantly increased again.
  • the at least one hollow busbar forms a hollow wall, which hollow wall is sealed off / closed off relative to its surroundings towards its lateral end edges.
  • the busbar is implemented with the largest possible cavity.
  • the first busbar forms a first cooling channel which is connected to an inlet connection of the first busbar that can be connected to a coolant inlet.
  • a cooling channel of the first busbar can be further connected to a coolant supply particularly easily during operation. If both busbars, that is to say both the first busbar and the second busbar, are (each) made hollow with the formation of a cooling channel, the cooling performance of the cooling device is further improved during operation.
  • the second busbar has a second cooling channel which is connected to a return connection of the second busbar that can be connected to a coolant return. This also makes it particularly easy to connect a coolant supply on the return side.
  • cooling channels are directly connected to one another.
  • the cooling channels of the two busbars are hydraulically connected to one another via a connecting element.
  • the connecting element is designed as a tube.
  • the tube is then connected with its first end to the first cooling channel and ruled out with its second end to the second cooling channel. This keeps the structure particularly simple.
  • the connecting element is preferably implemented as an electrical insulator.
  • the connecting element in order to generate an effective coolant circuit during operation, it is advantageous if the connecting element is received at an end region of the respective busbar facing away from the return connection and / or the inlet connection.
  • both busbars NEN form several to a common side of the at least one capacitor in orderly / outstanding fastening areas.
  • the fastening areas are preferably implemented as tabs. It is also in this context It is advantageous if both the (first) fastening areas of the first busbar and the (second) fastening areas of the second busbar lie in a common fastening plane.
  • the invention further relates to an electric motor for a drive train of a motor vehicle, with power electronics according to the invention according to at least one of the embodiments described above.
  • the power electronics are used in a typical way to control the electric motor, i. H. for forwarding electrical energy supplied to the stator of the electric motor or generated by this stator.
  • busbars waveguide busbars
  • busbars are used as busbars that contact several capacitors.
  • a non-conductive cooling fluid liquid flows through the bus rails to dissipate heat from critical areas. Usually most of the losses are caused by a high current density within the bus bars. By cooling the bus bars, these losses are efficiently avoided and the capacitors can be made smaller.
  • FIG. 1 shows a longitudinal sectional view of power electronics according to the invention according to a preferred exemplary embodiment, the formation of two busbars which couple several capacitors to one another can be clearly seen.
  • FIG. 2 shows a full perspective view of the power electronics according to FIG. 1, and also
  • FIG. 3 is a simplified representation of a possible design of the power electronics according to FIGS. 1 and 2 having electric motor.
  • the figures are only of a schematic nature and are used exclusively for understanding the invention. The same elements are provided with the same reference numerals.
  • the power electronics 1 is illustrated in these representations on the part of a capacitor unit and thus alternatively also referred to as a capacitor unit.
  • the power electronics 1 are used during operation, as shown schematically in connection with FIG. 3, to control an electric motor 20.
  • the electric motor 20 has, for example, a stator 18 fixed to the housing and a rotor 19 rotatably arranged relative to the stator 18.
  • the electric motor 20 is used as a drive machine of a hybrid or purely electrically driven motor vehicle.
  • the electric motor 20 is thus used in its operation in a drive train of the corresponding motor vehicle.
  • the power electronics 1 is typically electrically coupled to the stator 18 to control the electric motor 20. As a result, electrical energy can in principle be fed to the stator 18 by the power electronics 1 or can be absorbed by the stator 18.
  • the power electronics 1 has two busbars 2 and 3 that are electrically insulated relative to one another.
  • a second busbar 3 has a second plate-shaped receiving area 8.
  • the two receiving areas 6, 8 are aligned parallel to one another.
  • the two receiving areas 6, 8 are essentially rectangular.
  • the two receiving areas 6, 8 are also arranged at a distance from one another, so that a receiving space 21 is formed between the two receiving areas 6, 8.
  • several capacitors 4 are arranged. Alternatively, these capacitors 4 can also each be implemented as a capacitor winding and thus form a common capacitor 4.
  • the respective capacitor 4 has two electrodes 5, 7.
  • a first electrode 5 of the capacitor 4 contacts the first receiving area 6 and thus the first busbar 2.
  • a second electrode 7 of the capacitor 4 contacts the second receiving area 8 and thus the second busbar 3.
  • the capacitors 4 are fixed between the two busbars 2, 3 attached and attached to the respective busbar 2, 3 by their electrodes 5, 7.
  • each busbar 2, 3, as can be clearly seen in FIG. 1, forms a hollow wall 10.
  • the respective busbar 2, 3 is designed to be hollow.
  • An inner cavity 25 of the respective busbar 2, 3 forms a cooling channel 9a, 9b.
  • the first busbar 2 accordingly forms a first cooling channel 9a of a cooling device 22.
  • the second busbar 3 accordingly forms a second cooling channel 9b of the cooling device 22.
  • the busbars 2, 3 are designed to be hollow in their receiving area 6, 8 that the respective cooling channel 9a, 9b extends so long that it all capacitors 4 of the power electronics 1 in one Longitudinal direction of the busbar 2, 3 protrudes.
  • the first cooling channel 9a projects beyond all capacitors 4 on the part of their first electrodes 5; the second cooling channel 9b projects beyond all of the capacitors 4 on the part of their second electrodes 7.
  • each busbar 2, 3 is provided with a connection 12, 13 via which it is connected to a coolant supply of the cooling device 22 during operation. While the first cooling channel 9a is provided with an inlet connection 12, which is formed directly on the first busbar 2 (in the form of a borehole), the second busbar 3 has a return connection 13, the return connection 13 with the second Cooling channel 9b, which forms directly on the second busbar 3 (in the form of a borehole) with out is connected.
  • the inlet connection 12 and the return connection 13 are attached in a likewise hollow projection area 23 of the respective busbars 2, 3 which forms the cooling channel 9a, 9b.
  • the inlet connection 12 and the return Running connection 13 are seen in the longitudinal direction of the busbars 2, 3 to an axial end of the respective busbars 2, 3, to the side of the capacitors 4, angeord net.
  • the two inlet and return connections 12, 13 are arranged towards a common first axial end region 15a of the busbars 2, 3.
  • the two cooling channels 9a, 9b are hydraulically connected to one another at a second end region 15b of the busbars 2, 3 facing away axially from the first end region 15a.
  • a connecting element 14 which is implemented in an electrically insulating manner.
  • the connecting element 14 is implemented as a tube in this embodiment.
  • the connecting element 14 is connected with its first end 26a to the first cooling channel 9a; with its second end 26b the connecting element 14 is connected to the second cooling channel 9b.
  • the coolant preferably an electrically non-conductive fluid (preferably liquid), initially entering the first cooling channel 9a of the first busbar 2 through the inlet connection 12, flowing axially through the first busbar 2 and flows over in the area of the connecting element 14 into the second cooling channel 9b of the second busbar 3. The coolant then flows through the second cooling channel 9b of the second busbar 3 to the return connection 13.
  • the coolant preferably an electrically non-conductive fluid (preferably liquid)
  • the busbars 2, 3 each have fastening areas 17a, 17b, by means of which they are connected during operation to a housing, which is not shown here for the sake of clarity.
  • the first busbar 2 has a plurality of tab-shaped first fastening areas 17a arranged at a distance from one another in the longitudinal direction;
  • the second busbar 3 has a plurality of lug-shaped second fastening areas 17b arranged at a distance from one another in the longitudinal direction. It can be seen here that the fastening areas 17a and 17b are located in a common fastening plane.
  • the fastening areas 17a and 17b are also arranged on a common side.
  • the fastening areas 17a, 17b are provided with fastening holes 24 in the form of through holes for receiving a fastening means. Furthermore, it can be seen that fastening holes 24 are also made in the projection areas 23 of the first busbar 2 and the second busbar 3, by means of which the projection area 23 can also be used as a fastening area.
  • a fastening hole 24 of the projection region 23 of the first busbar 2 is arranged at a distance from the inlet connection 12 and the first cooling channel 9a.
  • a fastening hole 24 of the projection area 23 of the second busbar 3 is arranged at a distance from the return connection 13 and the second cooling channel 9b.
  • waveguides are used as busbars 2, 3.
  • a non-conductive cooling liquid flows through this, which transports the heat generated from the critical areas.
  • Fig. 1 the interior of a capacitor (capacitor unit 1) can be seen. This consists of two power rails (DC rail plus (first power rail 2); DC rail minus (second power rail 3)), as well as the non-conductive coolant transfer (connecting element 14).
  • the flat windings (capacitors 4) are not dealt with specifically.
  • the busbars 2, 3 are hollow. Inside the busbar 2, 3 flows a non-conductive cooling liquid. The coolant flows in via the coolant inlet 12, flows through the DC rail plus 2 and then flows through the coolant transfer 14 into the DC rail minus 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Motor Or Generator Cooling System (AREA)

Abstract

La présente invention concerne une électronique de puissance (1) pour un moteur électrique (20) d'une transmission d'un véhicule à moteur, pourvue d'une première barre omnibus (2), d'une seconde barre omnibus (3) isolée électriquement par rapport à la première barre omnibus (2) et au moins d'un condensateur (4) qui contacte avec sa première électrode (5) une zone de logement en forme de plaque (6) de la première barre omnibus (2) et contacte avec sa seconde électrode (7) une zone de logement en forme de plaque (8) de la seconde barre omnibus (3). Au moins une des deux barres omnibus (2, 3) est conçue de forme creuse pour la formation directe d'un canal de refroidissement (9a, 9b). La présente invention concerne en outre un moteur électrique (20) pourvu de cette électronique de puissance (1).
EP20718548.9A 2019-04-30 2020-03-30 Électronique de puissance avec barres omnibus conçues de forme creuse pour le refroidissement direct de condensateurs, ainsi que moteur électrique Pending EP3963608A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019111111.0A DE102019111111A1 (de) 2019-04-30 2019-04-30 Leistungselektronik mit hohl ausgebildeten Stromschienen zur direkten Kondensatorkühlung; sowie Elektromotor
PCT/DE2020/100259 WO2020221389A1 (fr) 2019-04-30 2020-03-30 Électronique de puissance avec barres omnibus conçues de forme creuse pour le refroidissement direct de condensateurs, ainsi que moteur électrique

Publications (1)

Publication Number Publication Date
EP3963608A1 true EP3963608A1 (fr) 2022-03-09

Family

ID=70285365

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20718548.9A Pending EP3963608A1 (fr) 2019-04-30 2020-03-30 Électronique de puissance avec barres omnibus conçues de forme creuse pour le refroidissement direct de condensateurs, ainsi que moteur électrique

Country Status (5)

Country Link
US (1) US20220225529A1 (fr)
EP (1) EP3963608A1 (fr)
CN (1) CN113767556A (fr)
DE (1) DE102019111111A1 (fr)
WO (1) WO2020221389A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112993825B (zh) * 2021-03-29 2022-11-08 国网河南省电力公司许昌供电公司 一种电力设备保护装置
DE102021210770A1 (de) * 2021-09-27 2023-03-30 Robert Bosch Gesellschaft mit beschränkter Haftung Leistungsmodul, insbesondere für eine Leistungselektronik eines Fahrzeugs
DE102022102409A1 (de) * 2022-02-02 2023-08-03 Schaeffler Technologies AG & Co. KG Elektrisches System und elektrische Antriebseinheit

Family Cites Families (13)

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Publication number Priority date Publication date Assignee Title
DE19913450A1 (de) * 1999-03-25 2000-09-28 Mannesmann Sachs Ag Leistungselektronik zum Steuern einer elektrischen Maschine
WO2007032270A1 (fr) * 2005-09-13 2007-03-22 Nec Corporation Couvercle isolant et ensemble dispositif electrique emballe sous film
JP4293246B2 (ja) * 2007-02-19 2009-07-08 株式会社日立製作所 電力変換装置
US7952875B2 (en) * 2009-05-29 2011-05-31 GM Global Technology Operations LLC Stacked busbar assembly with integrated cooling
FI10314U1 (fi) * 2013-10-14 2013-11-20 Abb Oy Kondensaattorijärjestely
US20160190663A1 (en) * 2014-10-09 2016-06-30 Simon Fraser University Busbars with integrated cooling system for vehicle battery assemblies
US9756755B2 (en) * 2014-10-31 2017-09-05 Denso Corporation Electric power converter
DE102016218151A1 (de) 2016-09-21 2018-03-22 Schaeffler Technologies AG & Co. KG Integrierter Elektronikbausatz mit direkter aktiver Kondensatorkühlung über Sammelschienen
DE102016219213B4 (de) 2016-10-04 2019-06-06 Schaeffler Technologies AG & Co. KG Leistungselektronik mit direkt und aktiv gekühlter Kondensatoreinheit mittels Wärmerohren
US10523094B2 (en) * 2017-03-15 2019-12-31 Karma Automotive Llc Power inverter with liquid cooled busbars
JP7139603B2 (ja) * 2017-12-28 2022-09-21 株式会社デンソー 電力変換装置
KR102532313B1 (ko) * 2018-03-07 2023-05-15 현대자동차주식회사 차량용 하이브리드 전력제어장치
US20200103179A1 (en) * 2018-10-01 2020-04-02 GM Global Technology Operations LLC Assemblies having enhanced heat transfer through vascular channels and methods of manufacturing assemblies having vascular channels

Also Published As

Publication number Publication date
WO2020221389A1 (fr) 2020-11-05
DE102019111111A1 (de) 2020-11-05
US20220225529A1 (en) 2022-07-14
CN113767556A (zh) 2021-12-07

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