WO2016110519A1 - Système de transmission électrique intégré - Google Patents

Système de transmission électrique intégré Download PDF

Info

Publication number
WO2016110519A1
WO2016110519A1 PCT/EP2016/050156 EP2016050156W WO2016110519A1 WO 2016110519 A1 WO2016110519 A1 WO 2016110519A1 EP 2016050156 W EP2016050156 W EP 2016050156W WO 2016110519 A1 WO2016110519 A1 WO 2016110519A1
Authority
WO
WIPO (PCT)
Prior art keywords
housing
electric machine
inverter
gearbox
drive system
Prior art date
Application number
PCT/EP2016/050156
Other languages
English (en)
Inventor
Jin-kang LI
Original Assignee
Continental Automotive 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 Continental Automotive Gmbh filed Critical Continental Automotive Gmbh
Publication of WO2016110519A1 publication Critical patent/WO2016110519A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
    • 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
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/15—Mounting arrangements for bearing-shields or end plates
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
    • H02K5/173—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
    • H02K5/1732—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings radially supporting the rotary shaft at both ends of the rotor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
    • H02K5/225—Terminal boxes or connection arrangements

Definitions

  • the present invention relates to the field of motorized vehicles, in particular to an integrated electric drive system for a motorized vehicle.
  • An electric drive system for the above types of automobile generally comprises an electric machine, an inverter and a gearbox/transmission.
  • these three parts (electric machine, inverter and gearbox/transmission) are manufactured separately; the electric machine and gearbox are joined together by means of a fastening element, while the electric machine and inverter are connected together using a multi-phase electric cable.
  • This configuration makes the total volume/dimensions of the gearbox, electric machine and inverter that are
  • the present invention provides an integrated electric drive system for a vehicle, with a compact structure, small overall dimensions and low cost.
  • an electric drive system for a vehicle comprising: an electric machine, comprising an electric machine housing, a front end cover, a rear end cover, and a stator assembly and a rotor assembly housed in the electric machine housing; a gearbox disposed at an output end of the electric machine, the gearbox having a gearbox housing, the gearbox housing comprising a gearbox half-housing close to the electric machine, the gearbox half-housing being constructed to be suitable for use as the front end cover of the electric machine; and an inverter disposed at another end, opposite the output end, of the electric machine, the inverter comprising an inverter housing, a power module and an inverter end cover, wherein the inverter housing is constructed to be suitable for use as the rear end cover of the electric machine; wherein the inverter housing and the gearbox half-housing are
  • the gearbox half-housing not only serves as part of the gearbox housing, but is also used as the front end cover of the electric machine, while the inverter housing is used as the rear end cover of the electric machine, the gearbox, electric machine and inverter which are fitted together become structurally compact, with a reduced vol ⁇ ume/dimensions and lower costs.
  • the stator assembly is provided with an AC input terminal, wherein the AC input terminal is generally a three-phase terminal;
  • the power module is provided with an AC output terminal, wherein the AC output terminal is generally a three-phase terminal, and the AC input terminal and the AC output terminal are configured so that the AC input terminal and the AC output terminal are directly connected together when the electric machine and the inverter have been fitted together.
  • the AC input terminal on the stator assembly and the AC output terminal on the power module are directly connected together by a threaded connection, welding, soft brazing, hard brazing, riveting or elastic contact.
  • a threaded connection welding, soft brazing, hard brazing, riveting or elastic contact.
  • the rotor assembly comprises a rotor shaft; advantageously, one end of the rotor shaft is supported by the gearbox half-housing via a first bearing assembly, while another end is supported by the inverter housing via a second bearing assembly.
  • the first bearing assembly and the second bearing assembly may for example be ball bearings or sliding bearings. It should be appreciated that other suitable types of bearing may also be used according to actual needs.
  • the first bearing assembly comprises a first bearing seat
  • the second bearing assembly comprises a second bearing seat, the first bearing seat being supported at all times on the gearbox half-housing, and the second bearing seat being supported at all times on the inverter housing.
  • the bearing seat of the electric machine since the bearing seat of the electric machine is located on the gearbox half-housing, the bearing seat may be processed together with another bearing seat of the gearbox, the relative positional error is very small, transmission precision is high, noise and vibration are low, transmission system components experience little friction, and the service life is long.
  • This structure shares a half-housing, which has good structural rigidity, a low weight and a short axial length.
  • the fastening elements may comprise a set of fastening bolts which extend through the gearbox half-housing, electric machine housing and inverter housing and fasten these together from one side.
  • the fastening elements may comprise two sets of fastening elements, wherein one set is a first set of fastening bolts which extend through the gearbox half-housing and electric machine housing and fasten the two together, while the other set is a second set of fastening bolts which extend through the inverter housing and the electric machine housing and fasten the two together.
  • the electric drive system configured according to the present invention has the advantages of compact structure, smaller overall dimensions and lower costs, and occupies less space in a vehicle.
  • Fig. 1 is a local exploded perspective view in one direction of an embodiment of the electric drive system according to the present invention, showing a gearbox half-housing, electric motor and inverter housing;
  • Fig. 2 is a local exploded perspective view in another direction of the electric drive system shown in Fig. 1 ;
  • Fig. 3 is an exploded perspective view of an embodiment of the inverter according to the present invention
  • Fig. 4 is an end view of the electric drive system shown in Fig. 1, wherein the gearbox half-housing, electric motor and inverter housing have been fitted together;
  • Fig. 5 is a sectional view along line A-A in Fig. 4;
  • Fig. 6 is a sectional view along line B-B in Fig. 4;
  • Fig. 7 is a local sectional view along line C-C in Fig. 5. Particular embodiments
  • Fig. 1 is a local exploded perspective view in one direction of an embodiment of the integrated electric drive system of the present invention.
  • the electric drive system comprises an electric machine 1, a gearbox 2 disposed at an output end of the electric machine, and an inverter 3 disposed at another end of the electric machine; a housing of the gearbox 2 is constructed to be formed of two pieces, i.e. comprises two gearbox half-housings .
  • the figure only shows a gearbox half-housing 12 of the gearbox that is close to the electric motor 1, and an inverter housing 13 of the inverter.
  • the electric machine 1 comprises an electric machine housing 11, and a stator assembly 10 and a rotor assembly 14 which are housed in a chamber defined by the electric machine housing 11.
  • the gearbox half-housing 12 which is disposed close to the output end of the electric machine 1 is constructed to be suitable for use as a front end cover of the electric machine 1, while the inverter housing 13 is constructed to be suitable for use as a rear end cover of the electric machine 1.
  • a set of fastening bolts e.g. six fastening bolts
  • a set of fastening bolts may be passed through corresponding openings in the gearbox half-housing 12, corresponding openings in the electric machine housing 11, and corresponding openings in the inverter housing 13 in sequence, to fasten together the gearbox half-housing 12, electric machine housing 11 and inverter housing 13.
  • two sets of fastening bolts may be used, one set of fastening bolts being passed through the gearbox half-housing 12 and electric machine housing 11 in sequence to fasten the two together, and the other set of fastening bolts being passed through the inverter housing 13 and electric machine housing 11 in sequence to fasten the two together.
  • the rotor assembly 14 of the electric machine 1 comprises a rotor shaft 15, one end of the rotor shaft 15 being supported in the gearbox half-housing 12 by means of a bearing assembly 17, the other end being supported in the inverter housing 13 by means of a bearing assembly 18; here, the bearing assemblies 17 and 18 may for example be ball bearings or sliding bearings. Of course, other suitable types of bearing are also feasible.
  • a bearing seat 17a of the bearing assembly 17 is fixed to the gearbox half-housing 12, e.g. may be formed integrally with the gearbox half-housing 12, while a bearing seat 18a of the bearing assembly 18 is fixed to the inverter housing 13, e.g. may be formed integrally with the inverter housing 13.
  • This configuration reduces the assembled volume/dimensions when the electric machine 1, gearbox 2 and inverter 3 are fitted together, thereby lowering manufacturing costs.
  • An inverter is an electronic device with a DC/AC conversion function, which converts DC electricity supplied by a DC power supply to AC electricity by means of a series of internal switch circuits, then supplies this AC electricity to an electronic apparatus operating in an AC environment.
  • an inverter is generally supplied with DC elec ⁇ tricity by an in-vehicle battery, and converts this DC elec- tricity to three-phase AC electricity for the in-vehicle electric machine to operate, in order to drive the automobile.
  • the inverter 3 comprises a capacitor module (not shown) and a power module 31, the capacitor module having a DC connection end which is connected electrically to a DC power supply; the power module 31 has multiple switch circuits, a DC input terminal (not shown) and AC output terminals; the AC output terminals are also referred to herein as AC output terminals 301, and the DC input terminal is connected electrically to the DC power supply.
  • the switch circuit converts DC electricity obtained from the DC input terminal to AC electricity, and outputs this AC electricity via the AC output terminals.
  • the inverter housing 13 encapsulates the power module and capacitor module in a chamber formed thereby.
  • the inverter 3 is also provided with an end cover 30, which is mounted, by means of fastening elements such as fastening bolts 5, at that end of the inverter housing 13 which faces away from the electric machine 1.
  • Fig. 2 shows, three AC input terminals 101 are provided at that end of the stator assembly 10 of the electric machine 1 which faces towards the inverter 3; from the point of view of the figure, the AC input terminals 101 are disposed on a bottom side of an end of the stator assembly.
  • Fig. 3 shows, three AC output terminals 301 are provided at a bottom side of one end of the power module 31 of the inverter 3; the three AC output terminals 301 are configured such that when the inverter 3 and electric machine 1 have been fitted together, the three AC output terminals 301 are in direct contact with the corresponding three AC input terminals 101 (see Fig. 7), and are connected together for example by a threaded connection, welding, soft brazing, hard brazing, riveting or elastic contact, with no need to use an additional connecting wire; this also lowers manufacturing costs.
  • elastic contact means that in order to realize an electrical connection and reliable conduction of electricity, conductors for conducting electricity must be in reliable contact, wherein one solution is for one of the conductors to have good elasticity, this conductor contacting the other conductor (which other conductor may not have good elasticity) and undergoing a certain amount of deformation, and generating an elastic force through elastic deformation so as to be in reliable contact with the other conductor, thereby re ⁇ alizing an electrical connection.
  • Most common household socket/plug systems and automobile insert-connection elements employ such a connection; the essence of this "elastic contact” _
  • connection lies in the use of a material having both conductivity and good elasticity to achieve contact and conduction of electricity, with no need for a third component for fixing.
  • the greatest advantage of using a connection of the "elastic contact" type is that assembly/disassembly is convenient and can be performed multiple times.
  • the assembled electric drive system comprising the electric machine 1, gearbox 2 and inverter 3 has a significantly reduced total volume (dimensions) , and occupies less floor space, while manufacturing costs are saved.
  • the AC output terminals of the inverter and the AC input terminals of the electric machine are configured to be connected by direct contact once assembly is complete; the use of additional connecting wires during assembly can be avoided, making assembly simple, and lowering assembly costs.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

La présente invention concerne un système de transmission électrique intégré destiné à un véhicule, comprenant : une machine électrique (1), comprenant une enveloppe (11) de machine électrique, un couvercle d'extrémité avant, un couvercle d'extrémité arrière et un stator (10) ainsi qu'un ensemble rotor (14) logés dans l'enveloppe (11) de machine électrique ; une boîte de vitesses (2) disposée au niveau d'une extrémité de sortie de la machine électrique (1), la boîte de vitesses (2) comportant un carter de boîte de vitesses, le carter de boîte de vitesses comprenant un demi-carter (12) de boîte de vitesses situé à proximité de la machine électrique (1), le demi-carter (12) de boîte de vitesses étant conçu pour une utilisation appropriée en tant que couvercle d'extrémité avant de la machine électrique (1) ; et un onduleur (3) disposé au niveau d'une autre extrémité, opposée à l'extrémité de sortie, de la machine électrique (1), l'onduleur (3) comprenant un boîtier (13) d'onduleur, un module de puissance (31) et un couvercle d'extrémité (32) d'onduleur, le boîtier d'extrémité (13) d'onduleur étant conçu pour une utilisation appropriée en tant que couvercle d'extrémité arrière de la machine électrique (1) ; le boîtier (13) d'onduleur et le demi-carter (12) de boîte de vitesses étant montés sur le boîtier (11) de machine électrique au moyen d'éléments de fixation. Le présent système de transmission électrique a une structure compacte et des coûts de fabrication réduits.
PCT/EP2016/050156 2015-01-08 2016-01-07 Système de transmission électrique intégré WO2016110519A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201510008316.XA CN105827060A (zh) 2015-01-08 2015-01-08 集成式电力驱动系统
CN201510008316.X 2015-01-08

Publications (1)

Publication Number Publication Date
WO2016110519A1 true WO2016110519A1 (fr) 2016-07-14

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2016/050156 WO2016110519A1 (fr) 2015-01-08 2016-01-07 Système de transmission électrique intégré

Country Status (2)

Country Link
CN (1) CN105827060A (fr)
WO (1) WO2016110519A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020230749A1 (fr) * 2019-05-14 2020-11-19 日本電産株式会社 Unité d'onduleur et unité de moteur
EP3751707A4 (fr) * 2018-02-12 2021-04-07 BYD Company Limited Ensemble électrique et véhicule le comprenant
EP3751708A4 (fr) * 2018-02-12 2021-04-07 BYD Company Limited Ensemble de puissance et véhicule équipé de ce dernier
EP3751709A4 (fr) * 2018-02-12 2021-04-14 BYD Company Limited Ensemble de puissance et véhicule le comprenant
JP7491306B2 (ja) 2019-05-14 2024-05-28 ニデック株式会社 インバータユニット、およびモータユニット

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US11146148B2 (en) 2017-06-30 2021-10-12 Hanon Systems BLDC motor integrated with inverter
CN111479716B (zh) * 2017-09-18 2024-01-19 罗伯特·博世有限公司 电驱动系统
CN109831062A (zh) * 2017-11-23 2019-05-31 上海汽车集团股份有限公司 集成驱动电机模块的变速器及具有其的混合动力总成
JP6692381B2 (ja) * 2018-03-13 2020-05-13 本田技研工業株式会社 電動車両のパワーユニット構造
DE102018206293A1 (de) * 2018-04-24 2019-10-24 Zf Friedrichshafen Ag Schnittstellenvorrichtung für ein Fahrzeug, Antriebssystem für ein Fahrzeug und Verfahren zum Montieren eines Antriebssystems für ein Fahrzeug
WO2020160785A1 (fr) * 2019-02-08 2020-08-13 Gkn Automotive Limited Ensemble connecteur et procédé de connexion électrique d'une barre omnibus d'onduleur à un connecteur électrique d'une unité d'attaque, et cette unité d'attaque

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DE19714784A1 (de) * 1997-04-10 1998-10-22 Danfoss As Kompaktantrieb
EP2475079A2 (fr) * 2011-01-07 2012-07-11 Mitsuba Corporation Moteur d'essuie-glace
WO2013069774A1 (fr) * 2011-11-09 2013-05-16 日立オートモティブシステムズ株式会社 Dispositif de propulsion pour automobile électrique
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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3751707A4 (fr) * 2018-02-12 2021-04-07 BYD Company Limited Ensemble électrique et véhicule le comprenant
EP3751708A4 (fr) * 2018-02-12 2021-04-07 BYD Company Limited Ensemble de puissance et véhicule équipé de ce dernier
EP3751709A4 (fr) * 2018-02-12 2021-04-14 BYD Company Limited Ensemble de puissance et véhicule le comprenant
US11509191B2 (en) 2018-02-12 2022-11-22 Byd Company Limited Electric assembly and vehicle having the same
US11611258B2 (en) 2018-02-12 2023-03-21 Byd Company Limited Electric assembly and vehicle having the same
EP4220909A1 (fr) * 2018-02-12 2023-08-02 BYD Company Limited Ensemble électrique et véhicule le comprenant
EP4220910A1 (fr) * 2018-02-12 2023-08-02 BYD Company Limited Ensemble électrique et véhicule le comprenant
US11735974B2 (en) 2018-02-12 2023-08-22 Byd Company Limited Electric assembly and vehicle having the same
US11843304B2 (en) 2018-02-12 2023-12-12 Byd Company Limited Electric assembly and vehicle having the same
WO2020230749A1 (fr) * 2019-05-14 2020-11-19 日本電産株式会社 Unité d'onduleur et unité de moteur
JP7491306B2 (ja) 2019-05-14 2024-05-28 ニデック株式会社 インバータユニット、およびモータユニット

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