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EP4576438A1 - Dispositif d'interface pour la connexion électrique entre un moteur électrique et un onduleur, par exemple dans un axe électrique, procédé de fabrication du dispositif d'interface et axe électrique - Google Patents

Dispositif d'interface pour la connexion électrique entre un moteur électrique et un onduleur, par exemple dans un axe électrique, procédé de fabrication du dispositif d'interface et axe électrique Download PDF

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Publication number
EP4576438A1
EP4576438A1 EP24212288.5A EP24212288A EP4576438A1 EP 4576438 A1 EP4576438 A1 EP 4576438A1 EP 24212288 A EP24212288 A EP 24212288A EP 4576438 A1 EP4576438 A1 EP 4576438A1
Authority
EP
European Patent Office
Prior art keywords
punched
interface device
bent part
bent
parts
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
EP24212288.5A
Other languages
German (de)
English (en)
Inventor
Guillermo Martinez de Frutos
Pol Planas Albareda
Eduardo Yepes Mayoral
Enrique Manuel Silva Gonzalez
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 EP4576438A1 publication Critical patent/EP4576438A1/fr
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/20—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for assembling or disassembling contact members with insulating base, case or sleeve
    • H01R43/24—Assembling by moulding on contact members
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2201/00—Connectors or connections adapted for particular applications
    • H01R2201/10—Connectors or connections adapted for particular applications for dynamoelectric machines
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2201/00—Connectors or connections adapted for particular applications
    • H01R2201/26—Connectors or connections adapted for particular applications for vehicles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/16—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for manufacturing contact members, e.g. by punching and by bending

Definitions

  • the present invention is based on the inventors' desire to create an interface device that can be manufactured with little effort.
  • each of the three busbars comprises a first punched-bent part made of an electrically conductive material and a second punched-bent part made of the electrically conductive material, wherein the first punched-bent part is electrically conductively connected to the second punched-bent part.
  • the inventors have further recognized that this advantage is at least partially is lost again if the parts to be produced using the punching and bending process have a comparatively complex shape.
  • the punched part itself can have a complex, for example irregular, shape.
  • a semi-finished product such as a metal or copper strip from which the punched part is produced by punching, can only be used to a small extent.
  • the unused portion i.e. the waste, is relatively high, which counteracts the cost-effectiveness of the process.
  • the more complex the punched part the greater the wear and tear on punching tools.
  • a punched/bent part may have a large number of bends, making it difficult to handle. The same applies to punched/bent parts that are relatively large or whose bends are relatively close together.
  • each busbar initially comprising two punched and bent parts.
  • Each of the two punched and bent parts is significantly less complex than the resulting busbar and can therefore be provided simply. This simplification goes so far that it can outweigh the additional effort resulting from the subsequent joining of the two punched and bent parts.
  • connection of the two stamped and bent parts can be achieved particularly economically and robustly by mechanical joining, for example, by pressing the stamped and bent parts into each other.
  • the resulting pressing force between the two connected stamped and bent parts can be further increased by stamping the inserted part after the pressing, especially if measures are taken to prevent lateral deflection of the receiving part during stamping.
  • connection of the two stamped and bent parts can be achieved particularly economically and robustly if the first stamped and bent part is connected to the second stamped and bent part by engaging the second stamped and bent part or by the second stamped and bent part engaging it.
  • one of the punched and bent parts is male and one of the punched and bent parts is female and by means of these shapes the two punched and bent parts are connected to each other.
  • the engagement of the first punched-bent part with the second punched-bent part creates a positive connection in at least one plane.
  • the strength of the connection is then increased.
  • first punched-bent part and the second punched-bent part each having a longitudinal extension with an end region, and by the end region of the second punched-bent part having an undercut recess, and the end region of the first punched-bent part being shaped complementarily to the end region of the second punched-bent part, so that it engages in the undercut recess; alternatively, the roles of the first and second punched-bent parts can be interchanged.
  • the undercut recess and the complementary part engaging in it thereby realize the form-fitting connection formed in one plane between the two punched-bent parts.
  • the complementarily shaped end region can have an engagement section. It is provided that the engagement section is shaped complementarily to the recess and engages into the recess. It can, for example, have the shape of a dovetail or have a round shape or an elliptical shape. It can also have a shape that includes a head section and a neck section. In this image, the neck section of the engagement section connects the head section of the engagement section with the Punched and bent part intended for the fuselage section.
  • the busbars can be made of metal or copper or a copper alloy, i.e. materials that have a high conductivity for electrical current.
  • the area of a busbar where the first stamped and bent part is connected to the second stamped and bent part can be overmolded with the injection molding compound. This protects the connection between the stamped and bent parts from environmental influences, thus increasing their robustness.
  • the interface device From a manufacturing perspective, it simplifies the process if the three first stamped and bent parts of the busbar are designed as identical parts. On the other hand, at least two of the three second stamped and bent parts of the busbar can differ from each other in terms of their shape. This allows the interface device to be used between components arranged in almost any way.
  • each of the three first punched-bent parts and/or each of the three second punched-bent parts has at least two bends, for example bends at an angle of 90° each.
  • the interface device 10 has three spaced-apart busbars 20 which are permanently connected to one another by an injection-molding compound 22 of the interface device 10 and are aligned relative to one another.
  • busbars 20 of the interface device 10 are shown in the Figure 2 again without the injection molding compound 22, but in their position relative to each other as shown in the interface device 10. It can be seen that the busbars are complexly shaped parts, which, for example, as stamped and bent parts 21a, 21b, have a plurality of bends 25, which, moreover, are comparatively close to each other relative to the material thickness of the busbars 20.
  • a first punched-bent part 21a which is in the Figure 3 shown on the left, into a second punched and bent part 21b, which is in the Figure 3 shown on the right, and that thus in a Figure 3 vertical and from the front left to the back right plane forms a positive connection.
  • Figure 6 shows the busbar 20 in the area of the end sections 31a, 31b, after the two stamped and bent parts 21a, 21b have been joined together, for example, using a mechanical joining process. It was verified that the electrical contact resistance in this area is tolerably low.
  • Figure 4 shows an alternative embodiment in which the recess 35 and the engagement portion 53 comprise a tapered neck portion 35a, 53a and a round, laterally projecting head portion 35b, 53b.
  • the first stamped and bent part 21a or its end portion 31a can be considered a body portion.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Connection Or Junction Boxes (AREA)
EP24212288.5A 2023-12-18 2024-11-12 Dispositif d'interface pour la connexion électrique entre un moteur électrique et un onduleur, par exemple dans un axe électrique, procédé de fabrication du dispositif d'interface et axe électrique Pending EP4576438A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102023212831.4A DE102023212831A1 (de) 2023-12-18 2023-12-18 Schnittstellenvorrichtung zur elektrischen Verbindung zwischen einem Elektromotor und einem Wechselrichter, zum Beispiel in einer E-Achse, Verfahren zur Herstellung der Schnittstellenvorrichtung und E-Achse

Publications (1)

Publication Number Publication Date
EP4576438A1 true EP4576438A1 (fr) 2025-06-25

Family

ID=93521011

Family Applications (1)

Application Number Title Priority Date Filing Date
EP24212288.5A Pending EP4576438A1 (fr) 2023-12-18 2024-11-12 Dispositif d'interface pour la connexion électrique entre un moteur électrique et un onduleur, par exemple dans un axe électrique, procédé de fabrication du dispositif d'interface et axe électrique

Country Status (2)

Country Link
EP (1) EP4576438A1 (fr)
DE (1) DE102023212831A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69906233T2 (de) * 1998-12-14 2003-11-06 Schneider Electric Industries Sas, Rueil-Malmaison Elektrische Verbindung für Sammelschiene
EP3553891A1 (fr) * 2018-04-11 2019-10-16 Weidmüller Interface GmbH & Co. KG Rail d'alimentation, ensemble constitué d'au moins deux rails d'alimentation et procédé de raccordement des rails d'alimentation
JP2021093299A (ja) * 2019-12-11 2021-06-17 ジヤトコ株式会社 コネクタ
JP2022070001A (ja) * 2020-10-26 2022-05-12 株式会社デンソー 電気部品、および、電気部品の製造方法
DE102021201264A1 (de) * 2021-02-10 2022-08-11 Vitesco Technologies Germany Gmbh Phasenanschluss zwischen einem Inverter oder Konverter und einer elektrischen Maschine nebst Verfahren zur Herstellung einer elektrischen Verbindung, elektrische Antriebseinrichtung
DE102023210554A1 (de) 2023-10-25 2025-04-30 Robert Bosch Gesellschaft mit beschränkter Haftung Schnittstellenvorrichtung für einen Elektromotor oder eine E-Achse eines Fahrzeugs und Herstellungsverfahren für eine Schnittstellenvorrichtung für einen Elektromotor oder eine E-Achse eines Fahrzeugs

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69906233T2 (de) * 1998-12-14 2003-11-06 Schneider Electric Industries Sas, Rueil-Malmaison Elektrische Verbindung für Sammelschiene
EP3553891A1 (fr) * 2018-04-11 2019-10-16 Weidmüller Interface GmbH & Co. KG Rail d'alimentation, ensemble constitué d'au moins deux rails d'alimentation et procédé de raccordement des rails d'alimentation
JP2021093299A (ja) * 2019-12-11 2021-06-17 ジヤトコ株式会社 コネクタ
JP2022070001A (ja) * 2020-10-26 2022-05-12 株式会社デンソー 電気部品、および、電気部品の製造方法
DE102021201264A1 (de) * 2021-02-10 2022-08-11 Vitesco Technologies Germany Gmbh Phasenanschluss zwischen einem Inverter oder Konverter und einer elektrischen Maschine nebst Verfahren zur Herstellung einer elektrischen Verbindung, elektrische Antriebseinrichtung
DE102023210554A1 (de) 2023-10-25 2025-04-30 Robert Bosch Gesellschaft mit beschränkter Haftung Schnittstellenvorrichtung für einen Elektromotor oder eine E-Achse eines Fahrzeugs und Herstellungsverfahren für eine Schnittstellenvorrichtung für einen Elektromotor oder eine E-Achse eines Fahrzeugs

Also Published As

Publication number Publication date
DE102023212831A1 (de) 2025-06-18

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