EP3308451A1 - Device for electrical connection between an electric motor and a supply unit of said motor, in particular for automotive vehicle compressor - Google Patents

Device for electrical connection between an electric motor and a supply unit of said motor, in particular for automotive vehicle compressor

Info

Publication number
EP3308451A1
EP3308451A1 EP16731337.8A EP16731337A EP3308451A1 EP 3308451 A1 EP3308451 A1 EP 3308451A1 EP 16731337 A EP16731337 A EP 16731337A EP 3308451 A1 EP3308451 A1 EP 3308451A1
Authority
EP
European Patent Office
Prior art keywords
motor
supply unit
connector
power supply
connection
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.)
Withdrawn
Application number
EP16731337.8A
Other languages
German (de)
French (fr)
Inventor
Mohamed Khanchoul
Augustin Bellet
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.)
Valeo Japan Co Ltd
Original Assignee
Valeo Japan Co Ltd
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 Valeo Japan Co Ltd filed Critical Valeo Japan Co Ltd
Publication of EP3308451A1 publication Critical patent/EP3308451A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/46—Fastening of windings on the stator or rotor structure
    • H02K3/52—Fastening salient pole windings or connections thereto
    • H02K3/521—Fastening salient pole windings or connections thereto applicable to stators only
    • H02K3/522—Fastening salient pole windings or connections thereto applicable to stators only for generally annular cores with salient poles
    • 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
    • H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
    • 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
    • H02K2203/00—Specific aspects not provided for in the other groups of this subclass relating to the windings
    • H02K2203/09—Machines characterised by wiring elements other than wires, e.g. bus rings, for connecting the winding terminations
    • 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 invention relates to a device for electrical connection between an electric motor and a power supply unit of said motor. It also relates to a motor equipped with said device and an assembly formed of said motor and its power unit. It will find more particularly its applications in the field of compressors, particularly electric compressors, for example for the circulation of a refrigerant inside a vehicle air conditioning system.
  • An electric compressor typically comprises a compression mechanism, driven by an electric motor, to pressurize the coolant in the air conditioning circuit.
  • the compressor further comprises an inverter for converting the available current into a current suitable for the compressor motor.
  • the inverter is adapted to convert a direct current into a three-phase alternating current.
  • the invention proposes to overcome the aforementioned drawbacks and concerns for this purpose a device for electrical connection between an electric motor and a power supply unit of said motor, in particular for a motor vehicle compressor, said device comprising a connection plug formed in a flexible metal sheet configured to allow blind mounting of the motor on the power unit with mechanical contact and electrical connection between said connector plug and a connector of said power unit. Thanks to the use of a defined conductor in a metal sheet, it is possible to have a connection plug with a large cross-section, in a limited space requirement. In addition, it is possible to form said connection plug so that it allows blind mounting. In addition, because of the small size of said plug, it limits the pressure losses in case of fluid circulation around the engine, as is the case in an electric compressor for a motor vehicle. By the flexible nature of the sheet, there will also be a solution for resisting vibration effectively.
  • Said device comprises a conductor intended to be electrically connected to several windings of the motor,
  • connection plug is electrically connected to said conductor
  • said conductor consists of a metal sheet
  • Said sheet metal is in the form of a ring
  • Said metal sheet has a substantially rectangular cross-section
  • - Said device is configured so that a large side of the cross section of said metal sheet being intended to be oriented along a longitudinal axis of a rotor of said engine, after assembly,
  • Said device comprises pins, electrically connected to said conductor, each of said pins being intended to be connected to one of the windings of the motor,
  • Said pins are L-shaped, one of the branches of the L being oriented radially and the other of the branches of the L being intended to be oriented along said longitudinal axis of the rotor of the engine, after assembly,
  • Said device comprises a plurality of said conductors, each associated with a said connection plug,
  • connection plugs are angularly offset from one to the other of the conductors
  • connection plugs are located in the same angular sector less than 90 ° or 45 ° or even 30 °, - The connection plugs have a different angular orientation,
  • the one or more connectors and the one or more connection plugs are overmolded, in particular of an electrical insulating material, to form a unitary assembly
  • connection plug includes a contact portion with the connector of the power supply unit and a connecting portion configured to give flexibility to the mechanical contact established between said device and said power supply unit,
  • Said connecting portion comprises a lyre-shaped zone
  • Said contact portion is configured to allow the establishment of said mechanical contact in a translational movement along the longitudinal axis of the rotor of said motor
  • Said contact portion comprises an end intended to come into touching contact with the connector of said connecting unit
  • Said contact portion comprises one or more flanks intended to come into contact with a lateral wall of the connector of said connecting unit;
  • Said sidewalls are located at a bent zone of said contact portion
  • Said contact portion is configured to allow mounting in a translational and rotational movement
  • Said contact portion comprises a housing for engaging the connector of the power supply unit in a translation movement along the longitudinal axis of the rotor of said motor,
  • Said contact portion comprises a blocking housing of the connector of the power supply unit
  • the invention also relates to a motor provided with a connection device as described above and an assembly formed of said motor and its power unit. According to complementary characteristics, which can be taken together or separately:
  • - Said connector consists of a connection plug
  • Said feeder connection plug comprises a core of a first metallic material and a skin of a second metallic material
  • - Said first material is copper.
  • said assembly further comprises a compressor, driven by said motor, so as to form an electric compression device.
  • FIG. 1 is a longitudinal sectional view of a compression device according to the invention
  • FIG. 2 is a cross-sectional view of a part of the engine and of the connection device of the compression device of FIG. 1, in a position where the engine is being assembled on its power unit;
  • FIG. 3 shows FIG. 2 in assembled position,
  • FIG. 4 shows FIG. 3 in perspective
  • FIG. 5 schematically illustrates, in an axial view and after flattening, a conductor and a connection plug of the connection device of the preceding figures
  • FIG. 6 illustrates a longitudinal sectional view of an alternative embodiment of the connection plug of the connection device according to the invention.
  • the invention relates to a compression device.
  • Figure 1 must therefore show at least schematically that the end of the tree causes a compression system.
  • the latter can be used for the compression of fluids of different kinds and can be mounted on any type of mobile device as well as fixed. It is however more particularly intended for the circulation of a refrigerant inside an air conditioning circuit of a motor vehicle on the chassis of which it will be fixed, directly or indirectly.
  • Said electric compression device comprises a compressor, not shown, a motor or electric machine 3 for driving the compressor and a device 5 for converting current, mounted on said machine.
  • Said conversion device 5 is configured to allow the supply and control of said electric machine 3. It thus serves as a power supply unit of the engine.
  • the compressor is advantageously of the spiral compression type
  • Said electric machine 3 is, for example, a three-phase electric motor.
  • Said conversion device 5 is, for example, an inverter, namely a device for converting a direct current, for example delivered by a battery, into an alternating current, in particular a three-phase alternating current.
  • the compressor may comprise a housing in which compression members are housed.
  • the electric machine 3 comprises a housing 30 in which are housed a stator 34 and a rotor 32 of said electric machine.
  • Said housings are, in particular, of hollow cylindrical shape. They extend longitudinally along a longitudinal axis common to a shaft of said compressor and the rotor of said electric machine.
  • the compressor housing and / or the housing 30 of the electric machine are, for example, aluminum or aluminum alloy.
  • Said electric machine 3 is advantageously configured to be fixed on a support, in particular the chassis, the drive motor or the gearbox of the equipped vehicle.
  • the stator 32 comprises a body 36 provided with teeth 38
  • the body 36 of said stator 32 is formed, for example, by stacking a package of sheets.
  • Said stator 32 further comprises windings 42, located around each of the teeth 38 and occupying said notches 40.
  • Said windings 42 are advantageously connected to each other in a three-phase configuration in the triangle and triangle (because no neutral points) (must be put both types of connection.
  • Said compression device is preferably configured so that the refrigerant passes through said electric machine 3 by coming into contact with said conversion device 5 so as to cool them.
  • a passage for the fluid can be advantageously provided between said electric machine 3 and the compressor 1.
  • Said conversion device 5 comprises a body 50, configured to be mounted on the electric machine 3.
  • said body 50 of the conversion device and said housing 30 of the electric machine 3 are two separate parts reported to each other.
  • Said conversion device 5 is here mounted cantilevered on said electric machine 3. It has, for example, a cylindrical configuration, in particular coaxial with the casings of the compressor and / or the electric machine 3.
  • Said conversion device comprises in particular, current conversion means, not shown, housed in said body 50.
  • Said conversion means may comprise, for example, bridges of transistors mounted on printed circuit boards.
  • Said device further comprises electrical connectors 52 for supplying said electrical machine 3, here three for the three-phase power supply.
  • This is, for example, connection plugs in the form of substantially rectilinear rods, in particular arranged at the top of a triangle.
  • Said body 50 is advantageously monobloc, in particular from foundry. It may be configured to promote cooling of said conversion means.
  • the power network used for powering the electrical machine is here provided at a relatively low voltage, for example less than 60V, involving the use of currents high amperage, especially peaks.
  • a device 60 for electrical connection between the electric motor 3 and the power supply unit 5 of said motor is provided. It is in this way located between said electric motor 3 and said feed unit 5.
  • Said connecting device 60 comprises one or more connection plugs 62a, 62b, 62c, here three, namely one for each phase of the motor although in Figure 1, only one of said connection plugs 62 is visible.
  • Said connection plugs are intended to allow the circulation of an electric current for supplying the motor from said power supply unit 5. They are each formed in a flexible metal sheet. They are further configured to allow blind mounting of the motor on the power unit with mechanical contact and electrical connection between each connector plug 62 and the associated connector 52, as will be discussed in more detail below.
  • said device comprises one or more conductors 64a, 64b, 64c, here three, namely one for each phase of the motor, intended to be electrically connected to several of the windings 42 of the motor.
  • Each connection plug 62a, 62b, 62c is electrically connected to one of said leads 64a, 64b, 64c.
  • Said conductors 64a, 64b, 64c are each constituted by a metal sheet bus bar.
  • Said metal sheet is here in the form of a ring. It may have a rectangular cross section.
  • connection plugs 62a, 62b, 62c are advantageously angularly offset from one another to the conductors 64a, 64b, 64c. They are here located in the same angular sector less than 90 ° or 45 ° or even 30 °.
  • said device is configured so that a large side of the cross section of said metal sheet is oriented along a longitudinal axis of the rotor 32 of said motor, after mounting.
  • said conductors 64a, 64b, 64c and said one or more connection plugs are overmolded with a material 68, electrical insulator, to form a unitary assembly, here having the configuration of a ring, centered on one end of the rotor 32.
  • said device may comprise pins 66, electrically connected to said conductor 64a, 64b, 64.
  • Each of said pins 66 is intended to be connected to one of the windings 42 of the motor 3.
  • Said pins 66 are here in accordance with FIG. L-shaped, one of the branches of the L being oriented radially and the other of the branches of the L being oriented along said longitudinal axis of the rotor 32 of the engine 3, after assembly.
  • the radial branches are fixed, in particular soldered and / or welded, to one of the conductors 64a, 64b, 64c while the other branches are attached to one end of the windings 42.
  • the motor here comprises fifteen windings 42 and, for the desired assembly, each conductor 64a, 64b, 64c is connected to ten windings 42 of the motor 3 by one of said pins 66.
  • Said conductors 64a, 64b, 64c are arranged, for example , concentrically.
  • connection plug 62a, 62b, 62c includes a portion 70 of contact with the associated connector 52a, 52b, 52c of the power unit and a connecting portion 72 configured to provide flexibility for mechanical contact established between said connection and said power supply unit 5.
  • Said connecting portion 72 comprises a radial portion, connected to the conductors 64a, 64b, 64c, and an angularly extending portion, situated between said radial portion and said contact portion 70.
  • Said connecting portion 72 in particular said portion portion extending angularly, may include a zone 74 in the form of a lyre to enhance its flexibility.
  • Said contact portion 70 is preferably configured to allow mounting in a translation movement and rotation also called bayonet mounting.
  • Said contact portion 70 comprises a housing 75 for engaging the connector 52 of the power supply unit in a translation movement along the longitudinal axis of the rotor of said motor.
  • Said contact portion further comprises a housing 76 for locking said connector 52.
  • Said engagement housing 75 and said blocking housing 76 communicate with each other so as to allow the passage of the connector 52 of the power supply unit of the to one another in a rotational movement about the longitudinal axis of the rotor of said motor.
  • said engagement housing 75 translational guide said connectors 52a, 52b, 52c during a first phase of the movement, as shown in FIG. 2, then, by rotation according to the arrow marked 78, said connectors are respectively inserted into the said housing 76 blocking the connection plugs 62a, 62b, 62c.
  • Said engagement housing 75 and said blocking housing 76 are herein defined by an omega shape of the contact portion 70, respectively by the open portion and bottom of said omega shape.
  • Such an omega shape allows snap locking connectors 52a, 52b, 52c in said connection plugs 62a, 62b, 62c.
  • studs may be used to lock in rotation the housing 30 of the motor and the body 50 of the feed unit, said studs being introduced into the orifices of each of these parts, said orifices being then in vis-à-vis.
  • connection plugs 62a, 62b, 62c advantageously have a different angular orientation.
  • the connection plugs 62a, 62c of the internal and external conductors 64a, 64c are oriented in a direction that can be described as anti-clockwise while the 62b connecting plug of the intermediate conductor 62b is oriented in a sense that can be described as time.
  • said connection sheets may be of different configuration.
  • connection plugs 62a, 62c of the inner and outer conductors 64a, 64c are of identical configuration with a portion 72 of substantially flat connection on either side of the zone 74 in the form of a lyre, in its portion extending angularly, while the connection plug 62b of the intermediate conductor 64b has a different configuration with a substantially rounded connecting portion 72, in its portion extending angularly. It may further be noted that one of the two connection plugs of the inner and outer conductors 64a, 64c, here the external plug 62a is angularly between the other 62c of said two plugs and the third plug 62b.
  • said blocking housing 76 comprises concave zones 80 configured to allow multipoint contact with the associated connector 64 of said power supply unit 5.
  • Said concave zones 80 are here distributed substantially at 90.degree. the other.
  • connection plugs may include teeth 82, spaced apart from each other along said connectors 52a, 52b, 52c (see Figure 4).
  • said contact portion 70 is configured to allow the establishment of said mechanical contact in a translational movement along the longitudinal axis of the rotor of said motor, according to the arrow 84.
  • said contact portion 70 provides both a guide of said connectors 52 and a contact between them and said plugs 62.
  • Said contact portion 70 comprises an end 86 intended to come into touching contact with the connector 52 of said connecting unit.
  • Said contact portion 70 also comprises one or more flanks 88 intended to come into contact with a side wall 90 of the connector 52 of said linking unit.
  • Said flanks 88 are located at a bent zone of said contact portion 70.
  • the connectors 52 of the power supply unit 5 comprise a core 92 made of a first metallic material, for example copper, and a skin 94 made of a second metallic material, for example 'steel.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Frames (AREA)
  • Compressor (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)

Abstract

The invention relates to a device for electrical connection between an electric motor and a supply unit of said motor, in particular for automotive vehicle compressor, said device comprising a connection plug (62) formed from flexible sheet metal configured to permit blind mounting of the motor on the supply unit with mechanical contact and electrical connection between said connection plug (62) and a connector (52) of said supply unit.

Description

Dispositif de connexion électrique entre un moteur électrique et une unité d'alimentation dudit moteur, notamment pour compresseur de véhicule automobile L'invention concerne un dispositif de connexion électrique entre un moteur électrique et une unité d'alimentation dudit moteur. Elle concerne également un moteur équipée dudit dispositif et un ensemble formé dudit moteur et de son unité d'alimentation. Elle trouvera plus particulièrement ses applications dans le domaine des compresseurs en particulier des compresseurs électriques, par exemple pour la circulation d'un fluide réfrigérant à l'intérieur d'un circuit de climatisation de véhicule.  The invention relates to a device for electrical connection between an electric motor and a power supply unit of said motor. It also relates to a motor equipped with said device and an assembly formed of said motor and its power unit. It will find more particularly its applications in the field of compressors, particularly electric compressors, for example for the circulation of a refrigerant inside a vehicle air conditioning system.
Un compresseur électrique comprend de manière classique un mécanisme de compression, entraîné par un moteur électrique, afin de mettre sous pression le fluide réfrigérant dans le circuit de climatisation. Pour alimenter le moteur électrique, le compresseur comprend en outre un onduleur pour convertir le courant disponible en un courant adapté pour le moteur du compresseur. A titre d'exemple, l'onduleur est adapté pour convertir un courant continu en un courant alternatif triphasé. An electric compressor typically comprises a compression mechanism, driven by an electric motor, to pressurize the coolant in the air conditioning circuit. To power the electric motor, the compressor further comprises an inverter for converting the available current into a current suitable for the compressor motor. By way of example, the inverter is adapted to convert a direct current into a three-phase alternating current.
Différentes solutions à base d'un montage filaire ont été proposées pour établir une connexion électrique entre le moteur et l'onduleur. Cependant, de telles solutions sont difficilement adaptables en cas de courant d'alimentation à faible tension et fort ampérage. En effet, dans ce cas de figure, il est nécessaire d'utiliser des fils de forte section et il n'est alors pas possible d'utiliser des connecteurs autorisant un montage simple du moteur sur l'onduleur. Different solutions based on wired mounting have been proposed to establish an electrical connection between the motor and the inverter. However, such solutions are difficult to adapt to in case of low voltage power supply current and high amperage. Indeed, in this case, it is necessary to use son of large section and it is not possible to use connectors allowing a simple mounting of the motor on the inverter.
L'invention se propose de pallier les inconvénients précités et concerne à cette fin un dispositif de connexion électrique entre un moteur électrique et une unité d'alimentation dudit moteur, notamment pour compresseur de véhicule automobile, ledit dispositif comprenant une fiche de connexion formée dans une tôle métallique flexible configurée pour autoriser un montage en aveugle du moteur sur l'unité d'alimentation avec contact mécanique et connexion électrique entre ladite fiche de connexion et un connecteur de ladite unité d'alimentation. Grâce à l'utilisation d'un conducteur défini dans une tôle métallique, on peut disposer d'une fiche de connexion de forte section, dans un encombrement limité. On peut en outre former ladite fiche de connexion de manière à ce qu'elle permette un montage en aveugle. En outre, en raison du faible encombrement de ladite fiche, on limite les pertes de charges en cas de circulation de fluide autour du moteur, comme ceci est le cas dans un compresseur électrique pour véhicule automobile. Par le caractère flexible de la tôle, on disposera également d'une solution permettant de résister aux vibrations de façon efficace. The invention proposes to overcome the aforementioned drawbacks and concerns for this purpose a device for electrical connection between an electric motor and a power supply unit of said motor, in particular for a motor vehicle compressor, said device comprising a connection plug formed in a flexible metal sheet configured to allow blind mounting of the motor on the power unit with mechanical contact and electrical connection between said connector plug and a connector of said power unit. Thanks to the use of a defined conductor in a metal sheet, it is possible to have a connection plug with a large cross-section, in a limited space requirement. In addition, it is possible to form said connection plug so that it allows blind mounting. In addition, because of the small size of said plug, it limits the pressure losses in case of fluid circulation around the engine, as is the case in an electric compressor for a motor vehicle. By the flexible nature of the sheet, there will also be a solution for resisting vibration effectively.
Selon des caractéristiques supplémentaires de l'invention qui pourront être prises ensemble ou séparément : According to additional features of the invention that can be taken together or separately:
- Ledit dispositif comprend un conducteur, destiné à être relié électriquement à plusieurs enroulements du moteur,  Said device comprises a conductor intended to be electrically connected to several windings of the motor,
- ladite fiche de connexion est reliée électriquement audit conducteur, said connection plug is electrically connected to said conductor,
- Ledit conducteur est constitué d'une tôle métallique, - said conductor consists of a metal sheet,
- Ladite tôle métallique est en forme d'anneau,  Said sheet metal is in the form of a ring,
- Ladite tôle métallique présente une section transversale sensiblement rectangulaire,  Said metal sheet has a substantially rectangular cross-section,
- Ledit dispositif est configuré de façon qu'un grand côté de la section transversale de ladite tôle métallique étant destiné à être orienté selon un axe longitudinal d'un rotor dudit moteur, après montage,  - Said device is configured so that a large side of the cross section of said metal sheet being intended to be oriented along a longitudinal axis of a rotor of said engine, after assembly,
- Ledit dispositif comprend des épingles, reliées électriquement audit conducteur, chacune desdites épingles étant destinées à être reliées à l'un des enroulements du moteur,  Said device comprises pins, electrically connected to said conductor, each of said pins being intended to be connected to one of the windings of the motor,
- Lesdites épingles sont en forme de L, l'une des branches du L étant orienté radialement et l'autre des branches du L étant destinée à être orientée selon ledit axe longitudinal du rotor du moteur, après montage, - Said pins are L-shaped, one of the branches of the L being oriented radially and the other of the branches of the L being intended to be oriented along said longitudinal axis of the rotor of the engine, after assembly,
- Ledit dispositif comprend une pluralité de dits conducteurs, associé chacun à une dite fiche de connexion, Said device comprises a plurality of said conductors, each associated with a said connection plug,
- Lesdits conducteurs sont disposés de façon concentrique,  - said conductors are arranged concentrically,
- Lesdites fiches de connexion sont décalées angulairement de l'un à l'autre des conducteurs,  Said connection plugs are angularly offset from one to the other of the conductors,
- Lesdites fiches de connexion sont situées dans un même secteur angulaire inférieur à 90° voire à 45° voire à 30° , - Les fiches de connexion présentent une orientation angulaire différente,- Said connection plugs are located in the same angular sector less than 90 ° or 45 ° or even 30 °, - The connection plugs have a different angular orientation,
- Le ou lesdits connecteurs et la ou lesdites fiches de connexion sont surmoulés, notamment d'un matériau isolant électrique, pour former un ensemble unitaire, - The one or more connectors and the one or more connection plugs are overmolded, in particular of an electrical insulating material, to form a unitary assembly,
- Ladite fiche de connexion comprend une partie de contact avec le connecteur de l'unité d'alimentation et une partie de liaison configurée pour donner une flexibilité au contact mécanique établi entre ledit dispositif et ladite unité d'alimentation, Said connection plug includes a contact portion with the connector of the power supply unit and a connecting portion configured to give flexibility to the mechanical contact established between said device and said power supply unit,
- Ladite partie de liaison comprend une zone en forme de lyre,  Said connecting portion comprises a lyre-shaped zone,
- Ladite partie de contact est configurée pour permettre l'établissement dudit contact mécanique selon un mouvement en translation selon l'axe longitudinal du rotor dudit moteur, Said contact portion is configured to allow the establishment of said mechanical contact in a translational movement along the longitudinal axis of the rotor of said motor,
- Ladite partie de contact comprend une extrémité destinée à venir en contact à bout touchant du connecteur de ladite unité de liaison,  Said contact portion comprises an end intended to come into touching contact with the connector of said connecting unit,
- Ladite partie de contact comprend un ou des flancs destinés à venir en contact avec une paroi latérale du connecteur de ladite unité de liaison,Said contact portion comprises one or more flanks intended to come into contact with a lateral wall of the connector of said connecting unit;
- Lesdits flancs sont situés au niveau d'une zone cintrée de ladite partie de contact, Said sidewalls are located at a bent zone of said contact portion,
- Ladite partie de contact est configurée pour permettre un montage selon un mouvement de translation puis de rotation,  Said contact portion is configured to allow mounting in a translational and rotational movement,
- Ladite partie de contact comprend un logement d'engagement du connecteur de l'unité d'alimentation selon un mouvement de translation selon l'axe longitudinal du rotor dudit moteur,  Said contact portion comprises a housing for engaging the connector of the power supply unit in a translation movement along the longitudinal axis of the rotor of said motor,
- Ladite partie de contact comprend un logement de blocage du connecteur de l'unité d'alimentation,  Said contact portion comprises a blocking housing of the connector of the power supply unit,
- Ledit logement d'engagement et ledit logement de blocage communiquent entre eux de façon à autoriser le passage du connecteur de l'unité d'alimentation de l'un à l'autre selon un mouvement de rotation autour de l'axe longitudinal du rotor dudit moteur,  - Said engagement housing and said locking housing communicate with each other so as to allow the passage of the connector of the supply unit from one to the other in a rotational movement about the longitudinal axis of the rotor said engine,
- Ledit logement de contact comprend des zones concaves configurées pour permettre un contact multipoint avec le connecteur de ladite unité d'alimentation. L'invention concerne également un moteur muni d'un dispositif de connexion tel que décrit plus haut ainsi qu'un ensemble formé dudit moteur et de son unité d'alimentation. Selon des caractéristiques complémentaires, qui pourront être prises ensemble ou séparément : - Said contact housing comprises concave zones configured to allow multipoint contact with the connector of said power unit. The invention also relates to a motor provided with a connection device as described above and an assembly formed of said motor and its power unit. According to complementary characteristics, which can be taken together or separately:
- Ledit connecteur est constitué d'une fiche de connexion,  - Said connector consists of a connection plug,
- Ladite fiche de connexion de l'unité d'alimentation comprend une âme en un premier matériau métallique et une peau en un second matériau métallique,  Said feeder connection plug comprises a core of a first metallic material and a skin of a second metallic material,
- Ledit premier matériau est du cuivre.  - Said first material is copper.
Selon un aspect de l'invention, ledit ensemble comprend en outre un compresseur, entraîné par ledit moteur, de manière à former un dispositif de compression électrique. According to one aspect of the invention, said assembly further comprises a compressor, driven by said motor, so as to form an electric compression device.
L'invention sera mieux comprise à la lecture de la description qui va suivre, donnée uniquement à titre d'exemple, et se référant aux dessins annexés sur lesquels : The invention will be better understood on reading the description which will follow, given solely by way of example, and referring to the appended drawings in which:
- la figure 1 est une vue de coupe longitudinale d'un dispositif de compression selon l'invention, FIG. 1 is a longitudinal sectional view of a compression device according to the invention,
la figure 2 est une vue de coupe transversale d'une partie du moteur et du dispositif de connexion du dispositif de compression de la figure 1 , dans une position où le moteur est en cours d'assemblage sur son unité d'alimentation, - la figure 3 reprend la figure 2 en position assemblée,  FIG. 2 is a cross-sectional view of a part of the engine and of the connection device of the compression device of FIG. 1, in a position where the engine is being assembled on its power unit; FIG. 3 shows FIG. 2 in assembled position,
la figure 4 reprend la figure 3 en perspective,  FIG. 4 shows FIG. 3 in perspective,
la figure 5 illustre de façon schématique selon une vue axiale et après aplatissement un conducteur et une fiche de connexion du dispositif de connexion des figures précédentes,  FIG. 5 schematically illustrates, in an axial view and after flattening, a conductor and a connection plug of the connection device of the preceding figures,
- la figure 6 illustre en vue de coupe longitudinale une variante de réalisation de la fiche de connexion du dispositif de connexion conforme à l'invention. - Figure 6 illustrates a longitudinal sectional view of an alternative embodiment of the connection plug of the connection device according to the invention.
Comme illustré figure 1 , l'invention concerne un dispositif de compression. Figure 1 doit donc montrer au moins schématiquement que le bout de l'arbre entraine un système de compression. Ce dernier pourra être utilisé pour la compression de fluides de différentes natures et pourra être monté sur tout type de dispositif aussi bien mobile que fixe. Il est cependant plus particulièrement destiné à la circulation d'un fluide réfrigérant à l'intérieur d'un circuit de climatisation d'un véhicule automobile sur le châssis duquel il sera fixé, directement ou indirectement. As illustrated in FIG. 1, the invention relates to a compression device. Figure 1 must therefore show at least schematically that the end of the tree causes a compression system. The latter can be used for the compression of fluids of different kinds and can be mounted on any type of mobile device as well as fixed. It is however more particularly intended for the circulation of a refrigerant inside an air conditioning circuit of a motor vehicle on the chassis of which it will be fixed, directly or indirectly.
Ledit dispositif de compression électrique selon l'invention comprend un compresseur, non illustré, un moteur ou machine électrique 3 d'entraînement du compresseur et un dispositif 5 de conversion de courant, monté sur ladite machine. Ledit dispositif 5 de conversion est configuré pour permettre l'alimentation et le contrôle de ladite machine électrique 3. Il sert donc d'unité d'alimentation du moteur. Le compresseur est avantageusement du type à spiral de compressionSaid electric compression device according to the invention comprises a compressor, not shown, a motor or electric machine 3 for driving the compressor and a device 5 for converting current, mounted on said machine. Said conversion device 5 is configured to allow the supply and control of said electric machine 3. It thus serves as a power supply unit of the engine. The compressor is advantageously of the spiral compression type
(Scroll en anglais) ou du type à palettes ou encore du type à pistons, ces exemples étant donnés à titre illustratif sans pour autant limiter la portée de l'invention. Ladite machine électrique 3 est, par exemple, un moteur électrique triphasé. Ledit dispositif 5 de conversion est, par exemple, un onduleur, à savoir un dispositif permettant de convertir un courant continu, par exemple délivré par une batterie, en un courant alternatif, notamment un courant alternatif triphasé. (Scroll in English) or pallet type or the piston type, these examples being given for illustrative purposes without limiting the scope of the invention. Said electric machine 3 is, for example, a three-phase electric motor. Said conversion device 5 is, for example, an inverter, namely a device for converting a direct current, for example delivered by a battery, into an alternating current, in particular a three-phase alternating current.
Le compresseur pourra comprendre un boîtier dans lequel sont logés des organes de compression. La machine électrique 3 comprend un boîtier 30 dans lequel sont logés un stator 34 et un rotor 32 de ladite machine électrique. Lesdits boîtiers sont, notamment, de forme cylindrique creuse. Ils s'étendent longitudinalement selon un axe longitudinal commun à un arbre dudit compresseur et au rotor de ladite machine électrique. Le boîtier du compresseur et/ou le boîtier 30 de la machine électrique sont, par exemple, en aluminium ou en alliage d'aluminium. The compressor may comprise a housing in which compression members are housed. The electric machine 3 comprises a housing 30 in which are housed a stator 34 and a rotor 32 of said electric machine. Said housings are, in particular, of hollow cylindrical shape. They extend longitudinally along a longitudinal axis common to a shaft of said compressor and the rotor of said electric machine. The compressor housing and / or the housing 30 of the electric machine are, for example, aluminum or aluminum alloy.
Ladite machine électrique 3 est avantageusement configurée pour être fixée sur un support, notamment le châssis, le moteur d'entraînement ou la boite de vitesse du véhicule équipé. Le stator 32 comprend un corps 36 muni de dents 38 espacées angulairement les unes des autres et présentant entre elles des encoches 40. Le corps 36 dudit stator 32 est formé, par exemple, par empilement d'un paquet de tôles. Ledit stator 32 comprend en outre des enroulements 42, situés autour de chacune des dents 38 et occupant lesdites encoches 40. Lesdits enroulements 42 sont avantageusement reliés entre eux selon un montage triphasé en riangle et triangle (car pas de points neutres) (il faut mettre les deux type de connexion. Said electric machine 3 is advantageously configured to be fixed on a support, in particular the chassis, the drive motor or the gearbox of the equipped vehicle. The stator 32 comprises a body 36 provided with teeth 38 The body 36 of said stator 32 is formed, for example, by stacking a package of sheets. Said stator 32 further comprises windings 42, located around each of the teeth 38 and occupying said notches 40. Said windings 42 are advantageously connected to each other in a three-phase configuration in the triangle and triangle (because no neutral points) (must be put both types of connection.
Ledit dispositif de compression est préférentiellement configuré pour que le fluide frigorigène traverse ladite machine électrique 3 en venant au contact dudit dispositif de conversion 5 de manière à les refroidir. Un passage pour le fluide peut être avantageusement prévu entre ladite machine électrique 3 et le compresseur 1. Ledit dispositif de conversion 5 comprend un corps 50, configuré pour être monté sur la machine électrique 3. Autrement dit, ledit corps 50 du dispositif de conversion et ledit boîtier 30 de la machine électrique 3 sont deux pièces distinctes rapportées l'une à l'autre. Ledit dispositif de conversion 5 est ici monté en porte à faux sur ladite machine électrique 3. Il présente, par exemple, une configuration cylindrique, en particulier coaxiale avec les boîtiers du compresseur et/ou de la machine électrique 3. Ledit dispositif de conversion comprend, notamment, des moyens de conversion de courant, non-représentés, logés dans ledit corps 50. Lesdits moyens de conversion pourront comprendre, par exemple, des ponts de transistors montés sur des cartes de circuits imprimés. Ledit dispositif comprend encore des connecteurs électriques 52 pour l'alimentation de ladite machine électrique 3, ici trois pour l'alimentation en triphasé. Il s'agit, par exemple, de fiches de connexion se présentant sous forme de tiges sensiblement rectilignes, notamment disposées au sommet d'un triangle. Ledit corps 50 est avantageusement monobloc, notamment issue de fonderie. Il pourra être configuré pour favoriser un refroidissement desdits moyens de conversion. Le réseau de puissance servant à l'alimentation de la machine électrique est ici prévu à une tension relativement faible, par exemple inférieure à 60V, impliquant l'utilisation de courants à fort ampérage, notamment en pique. Said compression device is preferably configured so that the refrigerant passes through said electric machine 3 by coming into contact with said conversion device 5 so as to cool them. A passage for the fluid can be advantageously provided between said electric machine 3 and the compressor 1. Said conversion device 5 comprises a body 50, configured to be mounted on the electric machine 3. In other words, said body 50 of the conversion device and said housing 30 of the electric machine 3 are two separate parts reported to each other. Said conversion device 5 is here mounted cantilevered on said electric machine 3. It has, for example, a cylindrical configuration, in particular coaxial with the casings of the compressor and / or the electric machine 3. Said conversion device comprises in particular, current conversion means, not shown, housed in said body 50. Said conversion means may comprise, for example, bridges of transistors mounted on printed circuit boards. Said device further comprises electrical connectors 52 for supplying said electrical machine 3, here three for the three-phase power supply. This is, for example, connection plugs in the form of substantially rectilinear rods, in particular arranged at the top of a triangle. Said body 50 is advantageously monobloc, in particular from foundry. It may be configured to promote cooling of said conversion means. The power network used for powering the electrical machine is here provided at a relatively low voltage, for example less than 60V, involving the use of currents high amperage, especially peaks.
Selon un aspect de l'invention, un dispositif 60 de connexion électrique entre le moteur électrique 3 et l'unité d'alimentation 5 dudit moteur est prévu. Il est de la sorte situé entre ledit moteur électrique 3 et ladite unité d'alimentation 5. According to one aspect of the invention, a device 60 for electrical connection between the electric motor 3 and the power supply unit 5 of said motor is provided. It is in this way located between said electric motor 3 and said feed unit 5.
Ledit dispositif 60 de connexion comprend une ou plusieurs fiches de connexion 62a, 62b, 62c, ici trois, à savoir une pour chaque phase du moteur bien que, à la figure 1 , seulement l'un desdites fiches de connexion 62 soit visible. Lesdites fiches de connexion sont destinées à permettre la circulation d'un courant électrique servant à l'alimentation du moteur depuis ladite unité d'alimentation 5. Elles sont chacune formées dans une tôle métallique flexible. Elles sont en outre configurées pour autoriser un montage en aveugle du moteur sur l'unité d'alimentation avec contact mécanique et connexion électrique entre chaque fiche de connexion 62 et le connecteur 52 associé, comme cela apparaîtra plus en détail dans la suite. Said connecting device 60 comprises one or more connection plugs 62a, 62b, 62c, here three, namely one for each phase of the motor although in Figure 1, only one of said connection plugs 62 is visible. Said connection plugs are intended to allow the circulation of an electric current for supplying the motor from said power supply unit 5. They are each formed in a flexible metal sheet. They are further configured to allow blind mounting of the motor on the power unit with mechanical contact and electrical connection between each connector plug 62 and the associated connector 52, as will be discussed in more detail below.
Comme illustré aux figures 2 et 3, ledit dispositif comprend un ou plusieurs conducteur 64a, 64b, 64c, ici trois, à savoir un pour chaque phase du moteur, destinés à être reliés électriquement à plusieurs des enroulements 42 du moteur. Chaque fiche de connexion 62a, 62b, 62c est reliée électriquement l'un desdits conducteurs 64a, 64b, 64c. Lesdits conducteurs 64a, 64b, 64c sont constitués chacun d'une tôle métallique faisant bus barre. Ladite tôle métallique est ici en forme d'anneau. Elle pourra présenter une section transversale rectangulaire. As illustrated in FIGS. 2 and 3, said device comprises one or more conductors 64a, 64b, 64c, here three, namely one for each phase of the motor, intended to be electrically connected to several of the windings 42 of the motor. Each connection plug 62a, 62b, 62c is electrically connected to one of said leads 64a, 64b, 64c. Said conductors 64a, 64b, 64c are each constituted by a metal sheet bus bar. Said metal sheet is here in the form of a ring. It may have a rectangular cross section.
Lesdites fiches de connexion 62a, 62b, 62c sont avantageusement décalées angulairement de l'un à l'autre des conducteurs 64a, 64b, 64c. Elles sont ici situées dans un même secteur angulaire inférieur à 90° voire à 45° voire à 30°. Said connection plugs 62a, 62b, 62c are advantageously angularly offset from one another to the conductors 64a, 64b, 64c. They are here located in the same angular sector less than 90 ° or 45 ° or even 30 °.
Comme cela est mieux visible figure 1 (ou 4), ledit dispositif est configuré de façon qu'un grand côté de la section transversale de ladite tôle métallique soit orienté selon un axe longitudinal du rotor 32 dudit moteur, après montage. As best seen in Figure 1 (or 4), said device is configured so that a large side of the cross section of said metal sheet is oriented along a longitudinal axis of the rotor 32 of said motor, after mounting.
Comme cela est également visible figure 1 , lesdits conducteurs 64a, 64b, 64c et la ou lesdites fiches de connexion sont surmoulés d'un matériau 68, isolant électrique, pour former un ensemble unitaire, présentant ici la configuration d'une couronne, centrée sur une extrémité du rotor 32. As is also visible in FIG. 1, said conductors 64a, 64b, 64c and said one or more connection plugs are overmolded with a material 68, electrical insulator, to form a unitary assembly, here having the configuration of a ring, centered on one end of the rotor 32.
Comme cela apparaît figure 4, ledit dispositif pourra comprendre des épingles 66, reliées électriquement audit conducteur 64a, 64b, 64. Chacune desdites épingles 66 est destinées à être reliées à l'un des enroulements 42 du moteur 3. Lesdites épingles 66 sont ici en forme de L, l'une des branches du L étant orienté radialement et l'autre des branches du L étant orientée selon ledit axe longitudinal du rotor 32 du moteur 3, après montage. Les branches radiales sont fixées, notamment brasées et/ou soudées, à l'un des conducteurs 64a, 64b, 64c tandis que les autres branches sont fixées à l'une des extrémités des enroulements 42. As shown in FIG. 4, said device may comprise pins 66, electrically connected to said conductor 64a, 64b, 64. Each of said pins 66 is intended to be connected to one of the windings 42 of the motor 3. Said pins 66 are here in accordance with FIG. L-shaped, one of the branches of the L being oriented radially and the other of the branches of the L being oriented along said longitudinal axis of the rotor 32 of the engine 3, after assembly. The radial branches are fixed, in particular soldered and / or welded, to one of the conductors 64a, 64b, 64c while the other branches are attached to one end of the windings 42.
Le moteur comprend ici quinze enroulements 42 et, pour le montage désiré, chaque conducteur 64a, 64b, 64c est relié à dix enroulements 42 du moteur 3 par l'une desdites épingles 66. Lesdits conducteurs 64a, 64b, 64c sont disposés, par exemple, de façon concentrique. The motor here comprises fifteen windings 42 and, for the desired assembly, each conductor 64a, 64b, 64c is connected to ten windings 42 of the motor 3 by one of said pins 66. Said conductors 64a, 64b, 64c are arranged, for example , concentrically.
Chaque fiche de connexion 62a, 62b, 62c comprend une partie 70 de contact avec le connecteur 52a, 52b, 52c associé de l'unité d'alimentation et une partie 72 de liaison configurée pour donner une flexibilité au contact mécanique établi entre ledit dispositif de connexion et ladite unité d'alimentation 5. Each connection plug 62a, 62b, 62c includes a portion 70 of contact with the associated connector 52a, 52b, 52c of the power unit and a connecting portion 72 configured to provide flexibility for mechanical contact established between said connection and said power supply unit 5.
Ladite partie 72 de liaison comprend une portion radiale, reliée aux conducteurs 64a, 64b, 64c, et une portion s'étendant angulairement, situé entre ladite portion radiale et ladite partie de contact 70. Ladite partie 72 de liaison, en particulier ladite partie portion s'étendant angulairement, pourra comprendre une zone 74 en forme de lyre pour renforcer sa flexibilité. Ladite partie 70 de contact est préférentiellement configurée pour permettre un montage selon un mouvement de translation puis de rotation aussi appelé montage baïonnette. Ladite partie 70 de contact comprend un logement 75 d'engagement du connecteur 52 de l'unité d'alimentation selon un mouvement de translation selon l'axe longitudinal du rotor dudit moteur. Ladite partie de contact comprend en outre un logement 76 de blocage dudit connecteur 52. Ledit logement 75 d'engagement et ledit logement 76 de blocage communiquent entre eux de façon à autoriser le passage du connecteur 52 de l'unité d'alimentation de l'un à l'autre selon un mouvement de rotation autour de l'axe longitudinal du rotor dudit moteur. Said connecting portion 72 comprises a radial portion, connected to the conductors 64a, 64b, 64c, and an angularly extending portion, situated between said radial portion and said contact portion 70. Said connecting portion 72, in particular said portion portion extending angularly, may include a zone 74 in the form of a lyre to enhance its flexibility. Said contact portion 70 is preferably configured to allow mounting in a translation movement and rotation also called bayonet mounting. Said contact portion 70 comprises a housing 75 for engaging the connector 52 of the power supply unit in a translation movement along the longitudinal axis of the rotor of said motor. Said contact portion further comprises a housing 76 for locking said connector 52. Said engagement housing 75 and said blocking housing 76 communicate with each other so as to allow the passage of the connector 52 of the power supply unit of the to one another in a rotational movement about the longitudinal axis of the rotor of said motor.
Autrement dit, ledit logement 75 d'engagement guide en translation lesdits connecteurs 52a, 52b, 52c lors d'une première phase du mouvement, comme illustré figure 2, puis, par rotation selon la flèche repérée 78, lesdits connecteurs sont respectivement introduits dans les dit logements 76 de blocage des fiches de connexion 62a, 62b, 62c. In other words, said engagement housing 75 translational guide said connectors 52a, 52b, 52c during a first phase of the movement, as shown in FIG. 2, then, by rotation according to the arrow marked 78, said connectors are respectively inserted into the said housing 76 blocking the connection plugs 62a, 62b, 62c.
Ledit logement 75 d'engagement et ledit logement 76 de blocage sont ici définis par une forme en oméga de la partie 70 de contact, respectivement par la partie ouverte et le fond de ladite forme en oméga. Une telle forme en oméga permet un blocage par encliquetage des connecteurs 52a, 52b, 52c dans lesdites fiches de connexion 62a, 62b, 62c. Après blocage, des goujons, non représentés, pourront être utilisés pour bloquer en rotation le boîtier 30 du moteur et le corps 50 de l'unité d'alimentation, lesdits goujons étant introduits dans des orifices de chacune de ces pièces, lesdits orifices se trouvant alors en vis-à-vis. Said engagement housing 75 and said blocking housing 76 are herein defined by an omega shape of the contact portion 70, respectively by the open portion and bottom of said omega shape. Such an omega shape allows snap locking connectors 52a, 52b, 52c in said connection plugs 62a, 62b, 62c. After locking, studs, not shown, may be used to lock in rotation the housing 30 of the motor and the body 50 of the feed unit, said studs being introduced into the orifices of each of these parts, said orifices being then in vis-à-vis.
Pour permettre un encombrement angulaire limité, les fiches de connexion 62a, 62b, 62c présentent avantageusement une orientation angulaire différente. Ici, les fiches de connexion 62a, 62c des conducteurs internes et externes 64a, 64c sont orientés dans un sens que l'on peut qualifier d'anti horaire tandis que la fiche de connexion 62b du conducteur intermédiaire 62b est orientée dans un sens que l'on peut qualifier d'horaire. Par ailleurs, lesdites fiches de connexion pourront être de configuration différente. Ici, les fiches de connexion 62a, 62c des conducteurs internes et externes 64a, 64c sont de configuration identique avec une partie 72 de liaison sensiblement plane de part et d'autre de la zone 74 en forme de lyre, dans sa partie s'étendant angulairement, tandis que la fiche de connexion 62b du conducteur intermédiaire 64b présente une configuration différente avec une partie de liaison 72 sensiblement arrondie, dans sa portion s'étendant angulairement. On peut en outre remarquer que l'une des deux fiches de connexion des conducteurs internes et externes 64a, 64c, ici la fiche externe 62a se trouve angulairement entre l'autre 62c desdites deux fiches et la troisième fiche 62b. To allow limited angular space, the connection plugs 62a, 62b, 62c advantageously have a different angular orientation. Here, the connection plugs 62a, 62c of the internal and external conductors 64a, 64c are oriented in a direction that can be described as anti-clockwise while the 62b connecting plug of the intermediate conductor 62b is oriented in a sense that can be described as time. Moreover, said connection sheets may be of different configuration. Here, the connection plugs 62a, 62c of the inner and outer conductors 64a, 64c are of identical configuration with a portion 72 of substantially flat connection on either side of the zone 74 in the form of a lyre, in its portion extending angularly, while the connection plug 62b of the intermediate conductor 64b has a different configuration with a substantially rounded connecting portion 72, in its portion extending angularly. It may further be noted that one of the two connection plugs of the inner and outer conductors 64a, 64c, here the external plug 62a is angularly between the other 62c of said two plugs and the third plug 62b.
Comme illustré à la figure 5, ledit logement 76 de blocage comprend des zones concaves 80 configurées pour permettre un contact multipoint avec le connecteur 64 associé de ladite unité d'alimentation 5. Lesdites zone concaves 80 sont ici réparties sensiblement à 90° l'une de l'au tre. As illustrated in FIG. 5, said blocking housing 76 comprises concave zones 80 configured to allow multipoint contact with the associated connector 64 of said power supply unit 5. Said concave zones 80 are here distributed substantially at 90.degree. the other.
Pour favoriser encore le contact, une extrémité distale desdites fiches de connexion pourra comprendre des dents 82, espacées les unes des autres le long desdits connecteurs 52a, 52b, 52c (voir figure 4). To further promote contact, a distal end of said connection plugs may include teeth 82, spaced apart from each other along said connectors 52a, 52b, 52c (see Figure 4).
Comme illustré à la figure 6, en variante, ladite partie 70 de contact est configurée pour permettre l'établissement dudit contact mécanique selon un mouvement en translation selon l'axe longitudinal du rotor dudit moteur, selon la flèche repéré 84. Autrement dit, ladite partie 70 de contact assure à la fois un guidage desdits connecteurs 52 et un contact entre ceux-ci et lesdites fiches 62. As illustrated in FIG. 6, in a variant, said contact portion 70 is configured to allow the establishment of said mechanical contact in a translational movement along the longitudinal axis of the rotor of said motor, according to the arrow 84. In other words, said contact portion 70 provides both a guide of said connectors 52 and a contact between them and said plugs 62.
Ladite partie 70 de contact comprend une extrémité 86 destinée à venir en contact à bout touchant du connecteur 52 de ladite unité de liaison. Ladite partie 70 de contact comprend également un ou des flancs 88 destinés à venir en contact avec une paroi latérale 90 du connecteur 52 de ladite unité de liaison. Lesdits flancs 88 sont situés au niveau d'une zone cintrée de ladite partie 70 de contact. Dans cette configuration en particulier, il est avantageux que les connecteurs 52 de l'unité d'alimentation 5 comprennent une âme 92 en un premier matériau métallique, par exemple du cuivre, et une peau 94 en un second matériau métallique, par exemple de l'acier. Said contact portion 70 comprises an end 86 intended to come into touching contact with the connector 52 of said connecting unit. Said contact portion 70 also comprises one or more flanks 88 intended to come into contact with a side wall 90 of the connector 52 of said linking unit. Said flanks 88 are located at a bent zone of said contact portion 70. In this configuration in particular, it is advantageous that the connectors 52 of the power supply unit 5 comprise a core 92 made of a first metallic material, for example copper, and a skin 94 made of a second metallic material, for example 'steel.
On comprend que, selon ces deux modes, un montage en aveugle du moteur 3 et de son unité d'alimentation 5 l'un sur l'autre est possible, ainsi que son démontage. Par ailleurs, l'utilisation d'une fiche formée d'une tôle métallique, par exemple en alliage de cuivre pour contact, permet de disposer à la fois d'une bonne flexibilité et d'une section de passage de courant qui est significative tout en restant d'encombrement limité. La résistance aux vibrations offerte par l'usage d'une tôle, éventuellement renforcée par les formes de lyre dont elle pourra être munie, est un autre avantage de l'invention. It is understood that, in these two modes, a blind assembly of the motor 3 and its supply unit 5 on one another is possible, as well as its disassembly. Furthermore, the use of a sheet formed of a metal sheet, for example copper alloy for contact, allows to have both good flexibility and a section of current flow that is significant while while remaining of limited size. The vibration resistance offered by the use of a sheet, possibly reinforced by the forms of lyre which it may be provided, is another advantage of the invention.

Claims

REVENDICATIONS
1. Dispositif de connexion électrique entre un moteur électrique (3) et une unité d'alimentation (5) dudit moteur (3), notamment pour compresseur de véhicule automobile, ledit dispositif comprenant une fiche de connexion (62) formée dans une tôle métallique flexible configurée pour autoriser un montage en aveugle du moteur sur l'unité d'alimentation (5) avec contact mécanique et connexion électrique entre ladite fiche de connexion (62) et un connecteur (52) de ladite unité d'alimentation (5). 1. Device for electrical connection between an electric motor (3) and a power supply unit (5) of said motor (3), in particular for a motor vehicle compressor, said device comprising a connection plug (62) formed in a metal sheet flexible arrangement configured to allow blind mounting of the motor on the power supply unit (5) with mechanical contact and electrical connection between said connection plug (62) and a connector (52) of said power supply unit (5).
2. Dispositif selon la revendication 1 comprenant un conducteur (64), destiné à être relié électriquement à plusieurs enroulements (42) du moteur (3) et dans lequel ladite fiche de connexion (62) est reliée électriquement audit conducteur (64). 2. Device according to claim 1 comprising a conductor (64) intended to be electrically connected to several windings (42) of the motor (3) and wherein said connection plug (62) is electrically connected to said conductor (64).
3. Dispositif selon la revendication précédente dans lequel ledit conducteur (64) est constitué d'une tôle métallique, en forme d'anneau. 3. Device according to the preceding claim wherein said conductor (64) consists of a metal sheet, ring-shaped.
4. Dispositif selon la revendication précédente dans lequel ladite tôle métallique présente une section transversale sensiblement rectangulaire, un grand côté de la section transversale de ladite tôle métallique étant destiné à être orienté selon un axe longitudinal d'un rotor (32) dudit moteur (3), après montage. 4. Device according to the preceding claim wherein said metal sheet has a substantially rectangular cross section, a large side of the cross section of said metal sheet being intended to be oriented along a longitudinal axis of a rotor (32) of said motor (3). ), after assembly.
5. Dispositif selon l'une quelconque des revendications 2 à 3 comprenant des épingles (66), reliées électriquement audit conducteur (64), chacune desdites épingles (66) étant destinée à être reliée à l'un des enroulements (42) du moteur (3). 5. Device according to any one of claims 2 to 3 comprising pins (66), electrically connected to said conductor (64), each of said pins (66) being intended to be connected to one of the windings (42) of the engine (3).
6. Dispositif selon l'une quelconque des revendications 2 à 4 comprenant une pluralité de dits conducteurs (64a, 64b, 64c), associé chacun à une dite fiche de connexion (62a, 62b, 62c). 6. Device according to any one of claims 2 to 4 comprising a plurality of said conductors (64a, 64b, 64c), each associated with a said plug (62a, 62b, 62c).
7. Dispositif selon la revendication précédente dans lequel lesdits conducteurs (64a, 64b, 64c) sont disposés de façon concentrique. 7. Device according to the preceding claim wherein said conductors (64a, 64b, 64c) are arranged concentrically.
8. Dispositif selon l'une quelconque des revendications 6 ou 7 dans lequel lesdites fiches de connexion (62a, 62b, 62c) sont décalées angulairement de l'un à l'autre des conducteurs (64a, 64b, 64c). 8. Device according to any one of claims 6 or 7 wherein said connection plugs (62a, 62b, 62c) are angularly offset from one to the other of the conductors (64a, 64b, 64c).
9. Dispositif selon l'une quelconque des revendications 2 à 8 dans lequel le ou lesdits conducteurs (64) et la ou lesdites fiches de connexion (62) sont surmoulés pour former un ensemble unitaire. 9. Device according to any one of claims 2 to 8 wherein the one or more conductors (64) and the one or more connection plugs (62) are overmolded to form a unitary assembly.
10. Dispositif selon l'une quelconque des revendications précédentes dans lequel ladite fiche de connexion (62) comprend une partie de contact (70) avec le connecteur (52) de l'unité d'alimentation (5) et une partie de liaison (72) configurée pour donner une flexibilité au contact mécanique établi entre ledit dispositif et ladite unité d'alimentation (5). Apparatus according to any one of the preceding claims wherein said connection plug (62) comprises a contact portion (70) with the connector (52) of the power supply unit (5) and a connecting portion ( 72) configured to provide flexibility for mechanical contact established between said device and said power supply unit (5).
1 1. Dispositif selon la revendication précédente dans lequel ladite partie de contact (70) est configurée pour permettre l'établissement dudit contact mécanique selon un mouvement en translation. 1 1. Device according to the preceding claim wherein said contact portion (70) is configured to allow the establishment of said mechanical contact in a translational movement.
12. Dispositif selon la revendication 10 dans lequel ladite partie de contact (70) est configurée pour permettre un montage selon un mouvement de translation puis de rotation. 12. Device according to claim 10 wherein said contact portion (70) is configured to allow mounting in a translational movement and rotation.
13. Dispositif selon la revendication précédente dans lequel ladite partie de contact (70) comprend un logement d'engagement (75) du connecteur (52) de l'unité d'alimentation (5), selon un mouvement de translation, et ladite partie de contact comprend un logement (76) de blocage du connecteur (52) de l'unité d'alimentation (5), ledit logement d'engagement (75) et ledit logement de blocage (76) communiquant entre eux de façon à autoriser le passage du connecteur (52) de l'unité d'alimentation (5) de l'un à l'autre selon ledit mouvement de rotation. 13. Device according to the preceding claim wherein said contact portion (70) comprises an engagement housing (75) of the connector (52) of the feed unit (5), in a translational movement, and said portion of contact comprises a housing (76) for blocking the connector (52) of the power supply unit (5), said engagement housing (75) and said blocking housing (76) communicating with each other so as to allow the passing the connector (52) of the power unit (5) from one to the other according to said rotational movement.
14. Dispositif selon la revendication précédente dans lequel ledit logement (76) de blocage comprend des zones concaves (80) configurées pour permettre un contact multipoint avec le connecteur (52) de ladite unité d'alimentation (5). 14. Device according to the preceding claim wherein said locking housing (76) comprises concave zones (80) configured to allow multipoint contact with the connector (52) of said power supply unit (5).
15. Ensemble d'un moteur, équipé du dispositif de connexion selon l'une quelconque des revendications précédentes, et de l'unité d'alimentation dudit moteur. 15. An assembly of a motor, equipped with the connection device according to any one of the preceding claims, and the power unit of said motor.
EP16731337.8A 2015-06-12 2016-06-10 Device for electrical connection between an electric motor and a supply unit of said motor, in particular for automotive vehicle compressor Withdrawn EP3308451A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1555373A FR3037446B1 (en) 2015-06-12 2015-06-12 DEVICE FOR ELECTRICAL CONNECTION BETWEEN AN ELECTRIC MOTOR AND A POWER SUPPLY UNIT OF THE MOTOR, IN PARTICULAR FOR A MOTOR VEHICLE COMPRESSOR
PCT/IB2016/053421 WO2016199077A1 (en) 2015-06-12 2016-06-10 Device for electrical connection between an electric motor and a supply unit of said motor, in particular for automotive vehicle compressor

Publications (1)

Publication Number Publication Date
EP3308451A1 true EP3308451A1 (en) 2018-04-18

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EP16731337.8A Withdrawn EP3308451A1 (en) 2015-06-12 2016-06-10 Device for electrical connection between an electric motor and a supply unit of said motor, in particular for automotive vehicle compressor

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EP (1) EP3308451A1 (en)
JP (1) JP2018528741A (en)
CN (1) CN107787544A (en)
FR (1) FR3037446B1 (en)
WO (1) WO2016199077A1 (en)

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WO2019065598A1 (en) * 2017-09-28 2019-04-04 日本電産株式会社 Motor
JP7213447B2 (en) 2019-09-25 2023-01-27 株式会社豊田自動織機 Automotive electric compressor

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JP3489484B2 (en) * 1999-05-19 2004-01-19 日立電線株式会社 Injection molding terminal block
JP3733315B2 (en) * 2001-10-26 2006-01-11 住友電装株式会社 Centralized power distribution member for thin brushless motor for vehicles
FR2841394B1 (en) * 2002-06-24 2004-11-19 Framatome Connectors Int CONNECTION DEVICE FOR FLEXIBLE CIRCUIT
DE50304462D1 (en) * 2003-03-21 2006-09-14 Grundfos As pump unit
JP4587470B2 (en) * 2005-05-30 2010-11-24 株式会社オートネットワーク技術研究所 Centralized power distribution member of motor
FR2916106B1 (en) * 2007-05-09 2009-06-26 Sonceboz Automotive Sa INSTRUMENT PANEL INDICATING MODULE OF AN ENGINE AND MEANS FOR ELECTRICAL CONNECTION.
KR101163475B1 (en) * 2010-03-08 2012-07-18 현대자동차주식회사 Terminal assembly for motor of hybrid vehicle
JP5530843B2 (en) * 2010-07-22 2014-06-25 株式会社ケーヒン Rotating electric machine
DE102010033699B4 (en) * 2010-07-30 2020-10-29 Stöber Antriebstechnik GmbH & Co. KG Switching head for electric motors and a method for connecting a switching head to the connecting strands of an electric motor winding
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JP2013165587A (en) * 2012-02-10 2013-08-22 Toyota Motor Corp Bus bar module for rotary electric machine and rotary electric machine

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FR3037446B1 (en) 2018-12-07
CN107787544A (en) 2018-03-09
WO2016199077A1 (en) 2016-12-15
JP2018528741A (en) 2018-09-27
FR3037446A1 (en) 2016-12-16

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