WO2016096413A1 - Dispositif de fixation pour un élément de branchement électrique - Google Patents

Dispositif de fixation pour un élément de branchement électrique Download PDF

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Publication number
WO2016096413A1
WO2016096413A1 PCT/EP2015/078284 EP2015078284W WO2016096413A1 WO 2016096413 A1 WO2016096413 A1 WO 2016096413A1 EP 2015078284 W EP2015078284 W EP 2015078284W WO 2016096413 A1 WO2016096413 A1 WO 2016096413A1
Authority
WO
WIPO (PCT)
Prior art keywords
busbar
fastening device
electrical
base body
plastic body
Prior art date
Application number
PCT/EP2015/078284
Other languages
German (de)
English (en)
Inventor
Klaus Herbold
Martin Schulz
Patrick Loeffler
Markus Wolff
Yves Detrois
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 WO2016096413A1 publication Critical patent/WO2016096413A1/fr

Links

Classifications

    • 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
    • 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
    • H02K11/04—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for rectification
    • H02K11/049—Rectifiers associated with stationary parts, e.g. stator cores
    • H02K11/05—Rectifiers associated with casings, enclosures or brackets
    • 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

Definitions

  • the invention relates to a fastening device for an electrical connection element according to the preamble of claim 1.
  • threaded connection bolts are provided on electrical machines, where cable can be attached.
  • the electrical cables are screwed to the threaded connection bolt.
  • high torque loads can occur on the threaded connection bolt, which is why it should be fastened as securely as possible to the electric machine.
  • busbar establishes the electrical connection between the line cable and the associated electrical devices of the electrical machine.
  • the busbar can be provided with an electrically non-conductive cap.
  • US Pat. No. 7,554,232 B2 discloses a fastening device for an electrical connection element of a generator, which uses a busbar consisting of an angled sheet-metal part, on which an electrical connection element projecting as a connection bolt protrudes.
  • the busbar is with an assembly of the screwed electrical machine. When tightening a power cable to the terminal bolt high torques occur, which are transmitted to the busbar.
  • the fastening device according to the invention for an electrical connection element of an electric machine with features of claim 1 has the advantage that is achieved by the positive and / or non-positive connection between the busbar and a main body of the electrical assembly (8) that when tightening a connecting cable while doing occurring high torques are largely uniformly distributed distributed to the body.
  • Anchoring elements protruding from the busbar ensure that, regardless of the orientation of the forces occurring, a secure transmission of forces from the busbar via the plastic body to the base body can take place.
  • the main body is preferably made of metal and may have on its side facing the plastic body spaces or ribbed or structured in any other way to produce between the body and the plastic body a secure positive connection or a frictional connection.
  • connection element protrudes on this end face and thus the largest torque load occurs when tightening a power cable to the connection element in this area.
  • Anchor elements with a greater distance to the torque-loaded point are very advantageous.
  • the armature elements projecting on the front side of the busbar in the form of tabs ensure that even high occurring forces are transmitted uniformly to the plastic body enclosing the armature elements and the busbar. Damage to the busbar and its leading to a rectifier of the electrical machine electrical connection can be avoided.
  • anchoring elements can protrude from a part of the busbar extending to form an electrical module in order to achieve a secure anchoring to the plastic body surrounding the busbar and the armature elements in this area as well.
  • the anchor elements are preferably angled on the busbar projecting, T-shaped tabs. In this case, a very good anchoring of the busbar in the surrounding plastic body is achieved by the T-shape of the tabs. An advantageous transmission of forces from the busbar to the plastic body is achieved by far projecting tabs.
  • the busbar can be very easily produced from a stamped sheet metal part, wherein the anchor elements and the busbar are bent into the desired shape.
  • the electrical connection element is preferably a threaded connection bolt suitable for tightening a connection cable.
  • Threaded stud allows for relatively easy attachment of a connection cable to a terminal and contact with the busbar.
  • the plastic body which encloses the busbar with its armature elements, is a plastic encapsulation, which can engage positively at least on a part of the main body of the associated electrical assembly.
  • the main body is preferably a metallic body, which serves as a heat sink for the electrical assembly to which the busbar is connected.
  • the base body can thus have cooling ribs or other surface structures which result in a secure form-locking connection or force-fit connection to the plastic body attached to the busbar in the injection molding process, when a part of the plastic body engages in at least one recess or gap on the base body.
  • the plastic body can also be glued to the production of one or more frictional connections with the body.
  • the fastening device according to the invention can be used very advantageously for an electrical connection element of an electronic rectifier of a generator, wherein the Basic body of the rectifier is designed as a ribbed, metallic heat sink.
  • the connection element forms the positive pole of the generator, which can be used to support the electrical system in a motor vehicle.
  • FIG. 2 shows an electrical assembly of an electrical machine with a threaded connection bolt
  • FIG. 3 shows a detailed view of the assembly shown in FIG. 2 in the area of the threaded connection bolt without plastic extrusion
  • FIG. 4 shows a further view in the region of the threaded connection bolt of the detail view of FIG. 3 and FIG. 4
  • Figure 5 is a sectional view of the assembly of Figure 2 in the region of the threaded connection bolt.
  • FIG. 1 shows an electrical machine 1, which is operable as a generator.
  • a machine housing 2 is surrounded by a stator 3 not visible here rotor, on the rotor shaft, a pulley 4 is mounted, via which the rotor is driven.
  • an assembly 5 which includes an electronic rectifier, which can be referred to as a synchronous rectifier or short SAR (Synchronous Active Rectifier).
  • an electrical connection element in the form of a threaded connection bolt 7 from.
  • the threaded connection pin 7 provides the positive pole the assembly 5, where a not shown here connecting cable can be screwed with a terminal.
  • the electric machine 1 shown in Figure 1 can be used as a generator in a motor vehicle to provide a charging current for charging the batteries located in the motor vehicle.
  • the electrical assembly 8 shown in Figure 2 is for an electric machine 1, as shown in Figure 1, can be used as a rectifier.
  • the housing 9 of the assembly 8 is sealed at the top by a cover 10, while at the bottom of the base body 11 of the assembly 8 is located.
  • the positive pole is a bus bar 12 with a threaded connection bolt 7 attached thereto.
  • the threaded connection bolt 7 forms a connection element to which a power cable can be screwed by means of a connection terminal.
  • the terminal contacted while the front side 13 of the bus bar 12th
  • the angled trained busbar 12 is only partially visible in the region of its end face 13 on which the threaded connection pin 7 protrudes.
  • the non-visible part of the bus bar 12 extends in a plastic body 14 to the electronic devices in the assembly 8.
  • the plastic body 14 is an encapsulation of the bus bar 12 and a part of the base body 11.
  • the plastic body 14 engages in particular in intermediate spaces in the region of the bus bar 12th and the adjacent base body 11, wherein the plastic body 14 produces a frictional or positive connection between the busbar 12 and the base body 11.
  • FIG. 3 shows a section of the assembly 8 of FIG. 2 in the region of the busbar 12, but without the plastic body 14 of FIG. 2.
  • the busbar 12 has a section 16 which extends horizontally in the image and merges into the angled, vertically aligned end face 13 , On both sides are on the front side 13 inwardly bent tabs 17, 18, which are T-shaped. From the horizontally oriented portion 16 of the bus bar 12 also protrude on both sides angled tabs 19, 20 from above. All tabs 17 to 20 are enclosed by the plastic body 14 in Figure 2, which engages in a gap 21 between the end face 13, the bus bar 12 and the base body 11. This results in a positive connection between the busbar 12 and the base body 11 via the plastic body 14.
  • busbar 12 can be seen from a perspective changed with respect to FIG.
  • the reference numbers used here denote the same elements as in FIG. 3.
  • the tabs 17, 18 form T-shaped anchor elements, since they firmly anchor in the plastic body 14.
  • the upwardly bent tabs 19, 20 are not T-shaped, but this is also an anchorages in the plastic body 14, so that the tabs 19, 20 can be referred to as anchor elements.
  • FIG. 5 shows a longitudinal section of the assembly 8 of FIG. 2 in the region of the threaded connection bolt 7 and the busbar 12 connected to it.
  • the plastic body 14 surrounds the busbar 12 and engages in a clearance 21 located between it and the base body 11 with a bolt-shaped downwards Part 22 on. All tabs 17 to 20 ( Figure 3 and Figure 4) are enclosed together with the busbar 12 from the plastic body 14, so that the threaded connection pin 7 occurring tilting moments or torques when tightening a power cable lead to no distortion or bending of the busbar 12. Rather, all forces are absorbed by the plastic body 14 and transmitted to the massive, metallic body 11. In the upper area is the Plastic body 14 also by means of tongue and groove adhesive connections 23 positively connected to the base body 11.
  • the assembly 8 includes an active synchronous rectifier and is intended for use with a generator.
  • the invention can also be used in electrical machines of recuperation systems.

Landscapes

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

Abstract

L'invention concerne un dispositif de fixation pour un élément de branchement électrique qui est disposé à l'écart sur une face frontale (13) coudée d'un rail de courant (12) d'un sous-ensemble électrique (8) d'une machine électrique (1) pouvant fonctionner en tant que générateur ou moteur. Sur le rail de courant (12) sont disposés, à l'écart dans une zone contiguë à l'élément de branchement, des éléments d'ancrage (22) qui reposent dans un corps en matière synthétique (14) reliant par complémentarité de forme et/ou à force les éléments d'ancrage et un corps de base (11) du sous-ensemble électrique (8).
PCT/EP2015/078284 2014-12-16 2015-12-02 Dispositif de fixation pour un élément de branchement électrique WO2016096413A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014226128.7A DE102014226128A1 (de) 2014-12-16 2014-12-16 Befestigungsvorrichtung für ein elektrisches Anschlusselement
DE102014226128.7 2014-12-16

Publications (1)

Publication Number Publication Date
WO2016096413A1 true WO2016096413A1 (fr) 2016-06-23

Family

ID=54754664

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2015/078284 WO2016096413A1 (fr) 2014-12-16 2015-12-02 Dispositif de fixation pour un élément de branchement électrique

Country Status (2)

Country Link
DE (1) DE102014226128A1 (fr)
WO (1) WO2016096413A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0199504A2 (fr) * 1985-04-10 1986-10-29 Mitsubishi Denki Kabushiki Kaisha Construction d'une borne pour un générateur à courant alternatif d'un véhicule automobile
DE3533065A1 (de) * 1985-09-17 1987-03-19 Bosch Gmbh Robert Adapter fuer einen drehstromgenerator
US20060186747A1 (en) * 2002-10-25 2006-08-24 Valeo Equipments Electiques Moteur Protective cover which is intended to be mounted on the rear bearing of a rotating electrical machine, alternator and alternator-starter comprising one such cover

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0199504A2 (fr) * 1985-04-10 1986-10-29 Mitsubishi Denki Kabushiki Kaisha Construction d'une borne pour un générateur à courant alternatif d'un véhicule automobile
DE3533065A1 (de) * 1985-09-17 1987-03-19 Bosch Gmbh Robert Adapter fuer einen drehstromgenerator
US20060186747A1 (en) * 2002-10-25 2006-08-24 Valeo Equipments Electiques Moteur Protective cover which is intended to be mounted on the rear bearing of a rotating electrical machine, alternator and alternator-starter comprising one such cover

Also Published As

Publication number Publication date
DE102014226128A1 (de) 2016-06-16

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