EP4331092A1 - Séquence de montage pour essieux électriques (système e-essieu) - Google Patents

Séquence de montage pour essieux électriques (système e-essieu)

Info

Publication number
EP4331092A1
EP4331092A1 EP22718672.3A EP22718672A EP4331092A1 EP 4331092 A1 EP4331092 A1 EP 4331092A1 EP 22718672 A EP22718672 A EP 22718672A EP 4331092 A1 EP4331092 A1 EP 4331092A1
Authority
EP
European Patent Office
Prior art keywords
assembly
preassembled
system housing
assembled
transmission
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
EP22718672.3A
Other languages
German (de)
English (en)
Inventor
Tobias SCHLITTENBAUER
Hazem Abdel Rahman
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP4331092A1 publication Critical patent/EP4331092A1/fr
Pending legal-status Critical Current

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
    • H02K7/006—Structural association of a motor or generator with the drive train of a motor vehicle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines

Definitions

  • the invention relates to an assembly method for an e-axis module comprising an electric machine, a power electronics assembly and a transmission. Furthermore, the invention relates to the use of the assembly method for producing an e-axle module of an electrically powered vehicle.
  • DE 102019 203 674 A1 relates to an electric drive with an electric machine and with power electronics.
  • the electric drive is installed in a transmission housing, the electric machine and the power electronics being connected to one another as a preassembled unit, and the power electronics being fastened and contacted on the axial side of the electric machine.
  • the electric machine is fluid-cooled and includes a central wet room.
  • the power electronics on the other hand, has a dry space adjacent to the wet space of the electrical machine.
  • a transmission of a vehicle with an electric drive attached to a transmission housing is proposed.
  • electric drives also referred to as e-axles
  • e-axles are fully assembled and then tested on an end-of-line test bench.
  • parts of the fully assembled electric drive are faulty, this usually leads to Rework on a fully assembled unit, which represents an avoidable effort in final assembly.
  • there are restrictions in the assembly sequence of components of previously used electric drives which can lead to restrictions in the variety of designs.
  • an assembly method for an E-axis module comprising an electric machine, a preassembled power electronics assembly and a transmission, with the following method steps being run through: a) joining a preassembled rotor assembly into a system housing, b) joining a preassembled stator assembly into the system housing , c) joining and establishing an electrical connection between a pre-assembled power electronics assembly and a system housing pre-assembled according to a) and b) and d) testing the pre-assembled system housing electrically connected according to c) with e-machine and pre-assembled power electronics assembly as a testable e-axis module Completion of the e-axle module with the gearbox.
  • the preassembled rotor assembly is first removed from an electrical Built into the system housing from the machine side or pushed into it from the side.
  • the rotor assembly includes the rotor mounted on a rotor shaft, bearing assemblies, and gearing components.
  • a preassembled stator assembly comprising a cup-shaped stator housing, is joined in the joining direction from the electric machine side of the system housing to the system housing, which preferably has an insert configured in a complementary cup shape.
  • the preassembled power electronics assembly is checked and tested separately before method step c) is carried out.
  • this avoids installing the preassembled and possibly faulty power electronics assembly when the final assembly of an e-axis module is complete, so that assembly costs and effort are saved and timely detection and ejection of defective parts and assemblies is ensured.
  • a high-voltage connection is established according to c) between the preassembled power electronics assembly and the electrical machine in the preassembled system housing.
  • the checkable and testable e-axle module is completed by preassembled transmission components of the transmission after a functional test has been carried out. This ensures that no further processing is carried out on assemblies that have already been found to be defective and that only tested and checked assemblies, in particular a functionally intact, testable and testable e-axis module, are fitted with the transmission components of the transmission.
  • the testable E-axis module is completed by pre-assembled transmission components of the transmission from one side of the transmission, with the pre-assembled transmission components being joined to the pre-assembled system housing on the transmission side.
  • the preassembled system housing of the testable e-axis module is closed with a transmission cover on a circumferential seal on the transmission side of the preassembled system housing, so that a completely manufactured e-axis module is obtained becomes.
  • the invention relates to the use of the method for producing an e-axle module of an electrically driven vehicle, for example a passenger car or a light or medium-duty commercial vehicle for transporting loads.
  • the solution proposed according to the invention represents an assembly sequence that ensures that a fully integrated and functional e-axis module is obtained before the e-axis module is completed by assembling the transmission or the preassembled transmission components.
  • the assembly method proposed according to the invention allows early checking and decoupled testing of the subcomponents of the power electronics assembly (inverter) and electrical machines before preassembled transmission components and the transmission itself are assembled. This allows a significant reduction and simplification of the scope of assembly to be achieved, as well as a reduction in costs caused by errors, since defective assemblies can be ejected from the assembly process in good time.
  • the assembly method proposed according to the invention can also be used advantageously within a service concept, which is carried out during maintenance work and relates to the assembly sequence.
  • Figure 1 a joining of pre-assembled stator and rotor assembly in the system housing
  • FIG. 2 shows the joining of a preassembled power electronics module with the preassembled system housing according to FIG. 1 and
  • Transmission cover on a pre-assembled system housing that can be checked and tested with an electrically interconnected power electronics assembly and electrical machine.
  • FIG. 1 shows a system housing 12 of an E-axis module 10, the essential components of which are shown in FIG.
  • the system housing 12 includes an electric machine side 14 and a transmission side 16 opposite this.
  • An electric machine 18 is introduced into the system housing 12 as shown in FIG.
  • the electric machine 18 comprises a preassembled rotor assembly 20.
  • the preassembled rotor assembly 20 in turn comprises a rotor 22 non-rotatably joined to a rotor shaft 24, at least one running gear 26 and one or more bearings 28, which are indicated only schematically in the illustration according to FIG.
  • the rotor shaft 24 is rotatably accommodated in the system housing 12 by the bearings 28 .
  • Reference number 38 designates a joining direction in which the preassembled rotor assembly 20 is pushed into the system housing 12 from the electric machine side 14 .
  • FIG. 1 shows a preassembled stator assembly 32 which comprises a stator housing 30 configured in a pot shape.
  • the stator housing 30 can be designed in a conicity in order to enable an easier joining of the preassembled stator assembly 32 with an insert within the system housing 12 designed to complement its geometry.
  • 1 shows that the outside of the stator housing 30 can be provided with a number of ribs extending in the axial direction, via which a fluid cooling of the electric machine 18 can be achieved when the stator housing 30 is in the installed state in the system housing 12.
  • Both the preassembled rotor assembly 20 and the preassembled stator assembly 32 are pushed into the system housing 12 from the electric machine side 14 in the joining direction 38 , resulting in a preassembled system housing 42 .
  • the system housing 12 can have a trough 36 or a trough-like depression on its upper side, which offers space for components or semiconductor components of a preassembled power electronics assembly 34, as indicated in Figure 2 .
  • FIG. 2 shows the preassembled rotor assembly 20 together with the rotor shaft 24, which is accommodated in the preassembled system housing 42.
  • the trough 36 On the upper side of the preassembled system housing 42 is the trough 36, also shown in FIG. 1, or a trough-like depression.
  • a cover 40 is joined to this in a substantially vertical joining direction 44 .
  • the components of a preassembled power electronics system 34 are located in the cover 40.
  • the power electronics system 34 can be assembled in several steps, with the power electronics system 34 being installed first in the recess 36 of the system housing 12 and being completed by the cover 40 within a second assembly step.
  • FIG. 2 shows that there is a circumferential seal 58 on the transmission side 16 of the preassembled system housing 42 .
  • This seal 58 can be designed as a circumferential band or as a sealing paste or the like.
  • the seal 58 can only at a later date on a corresponding sealing surface are mounted, which takes place directly before the assembly and screwing of a gear cover 56. In the illustration according to FIG. 2, only one sealing surface is shown.
  • Figure 3 shows the checkable and testable e-axis module 62 after the pre-assembled power electronics assembly 34 already mentioned in connection with the description of Figure 2, accommodated in the cover 40, has been assembled with the pre-assembled system housing 42 and at least one high-voltage connection to the preassembled system housing 42 built-in electrical machine 18 has been created. Furthermore, further signal, sensor and control lines run between the preassembled power electronics assembly 34 and the components of the electrical machine 18 which is contained in the preassembled system housing 42 . High-voltage connections 46 are located on the side of power electronics assembly 34, while connections for a cooling medium are shown on the underside of preassembled system housing 42. The position of the connections on the circumference of the system housing 12 or on the circumference of the preassembled system housing 42 can vary. According to the illustration in FIG. 3, the functionality of the checkable and testable E-axis module 62 can be checked and tested without transmission components 50 of a gearbox 48 being mounted on the checkable and testable E-axis module 62 .
  • the preassembled power electronics assembly 34 integrated into the cover 40 and shown in connection with Figure 2 is preferably tested separately before assembly with the preassembled system housing 42, so that only those preassembled power electronics 34 that have been found to be intact are ultimately joined to the preassembled system housing 42 and connected to each other electrically and in terms of control lines get connected.
  • testable e-axle module 62 After tests and test routines have been carried out on the testable e-axle module 62 shown in Figure 3 and depending on the test result, pre-assembled transmission components 50 of a transmission 48 on the transmission side 16 of the test and testable E-axis module 62 are mounted.
  • the preassembled transmission components 50 can be, for example, a pinion shaft 52 and one or more gears 54 . These are inserted laterally into corresponding openings on the transmission side 16 in the preassembled system housing 42, before finally the preassembled system housing 42 of the testable E-axis module 62 is closed by applying a transmission cover 56 laterally to the seal 58 on the preassembled system housing 42 he follows.
  • the gear cover 56 is fastened with several flange screws 60 after the gear cover 56 has been aligned and the gear cover 56 has been fitted precisely to the seal 58 on the gear side 16 of the preassembled system housing 42 of the testable E-axis module 62.
  • FIG. 3 shows a peripheral sealing surface on which a peripheral seal 58 is mounted on the transmission side 16 before the transmission cover 56 is installed.
  • the method proposed according to the invention avoids that only after complete assembly of the E-axis module 10 with the im Essential components shown in Figure 3 turns out when performing tests and test routines that faulty components are installed.
  • the assembly method proposed according to the invention enables test routines and test methods to be divided between the individual assemblies, so that assembly steps and if faulty assemblies are present
  • Assembly effort can be saved, since faulty, pre-assembled power electronics assemblies 34 or faulty, pre-assembled system housings 42 can be ejected from the assembly process in good time before pre-assembled transmission components 50 of the transmission 58 are installed on the transmission side 16 of the testable E-axis module 62.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • General Details Of Gearings (AREA)

Abstract

L'invention concerne un procédé de montage d'un module d'e-essieu (10) comprenant une machine électrique (18), un système électronique de puissance (34) et une transmission (48), ledit procédé comprenant les étapes qui consistent à : assembler un ensemble rotor pré-assemblé (20) à un boîtier de système (12) ; assembler un ensemble stator pré-assemblé (32) au boîtier de système (12) ; assembler le système électronique de puissance pré-assemblé (34) au boîtier de système pré-assemblé (42) équipé d'un ensemble rotor (20) et d'un ensemble stator (32) et établir une connexion électrique entre le système électronique de puissance (34) et le boîtier de système (42) ; tester les composants reliés électriquement entre eux, le boîtier de système pré-assemblé (42) avec la machine électrique (18) et le système électronique de puissance pré-assemblé (34) en tant que module d'e-essieu (62) pouvant être testé avant de compléter le module d'e-essieu (62) avec la transmission (48). L'invention concerne en outre l'utilisation du procédé de montage pour la fabrication d'un module d'e-essieu (10) d'un véhicule à propulsion électrique.
EP22718672.3A 2021-04-26 2022-03-28 Séquence de montage pour essieux électriques (système e-essieu) Pending EP4331092A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102021204121.3A DE102021204121A1 (de) 2021-04-26 2021-04-26 Montagesequenz fuer elektrische Achsen (eAchse System)
PCT/EP2022/058066 WO2022228796A1 (fr) 2021-04-26 2022-03-28 Séquence de montage pour essieux électriques (système e-essieu)

Publications (1)

Publication Number Publication Date
EP4331092A1 true EP4331092A1 (fr) 2024-03-06

Family

ID=81386600

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22718672.3A Pending EP4331092A1 (fr) 2021-04-26 2022-03-28 Séquence de montage pour essieux électriques (système e-essieu)

Country Status (4)

Country Link
EP (1) EP4331092A1 (fr)
CN (1) CN117280577A (fr)
DE (1) DE102021204121A1 (fr)
WO (1) WO2022228796A1 (fr)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012200488A1 (de) * 2012-01-13 2013-03-28 Schaeffler Technologies AG & Co. KG Elektrischer Antriebsstrang für Kraftfahrzeuge
WO2018086679A1 (fr) * 2016-11-09 2018-05-17 Gkn Automotive Ltd. Ensemble moteur-transmission pour un véhicule automobile et son procédé de fabrication
DE102017212677A1 (de) * 2017-07-24 2019-01-24 Zf Friedrichshafen Ag Getriebe für ein Kraftfahrzeug
CN109378945B (zh) * 2018-12-10 2024-07-02 上海伊控动力系统有限公司 一种深度集成的电驱动系统
WO2020164715A1 (fr) * 2019-02-14 2020-08-20 Gkn Automotive Ltd. Dispositif d'entraînement pourvu d'entraînement électrique et transmission
DE102019203674A1 (de) 2019-03-19 2020-09-24 Zf Friedrichshafen Ag Elektrischer Antrieb mit einer elektrischen Maschine und mit einer Leistungselektronik

Also Published As

Publication number Publication date
DE102021204121A1 (de) 2022-10-27
CN117280577A (zh) 2023-12-22
WO2022228796A1 (fr) 2022-11-03

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