• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present invention proposes a stator for a rotating electric machine of a motor vehicle, the stator (5) comprising: - an electric winding (16), this winding comprising a plurality of electrical conductors (22), - at least one insert (25) mounted on the winding (16), - at least one temperature measuring probe (23) carried by said insert (25) and comprising at least one sensitive element (24) arranged to measure the temperature of the winding (16) .
    公开号:FR3046507A1
    申请号:FR1650029
    申请日:2016-01-05
    公开日:2017-07-07
    发明作者:Ryadh Ben-Omrane；Christophe Monteil
    申请人:Valeo Equipements Electriques Moteur SAS；
    IPC主号:
    专利说明:

    The invention relates in particular to a stator for a rotating electrical machine. The invention finds a particularly advantageous application in the field of rotating electrical machines such as alternators or reversible machines. It will be recalled that a reversible machine is a rotating electrical machine able to work in a reversible manner, on the one hand, as an electric generator in alternator function and, on the other hand, as an electric motor in particular for starting the engine of the motor vehicle.
    A rotating electrical machine comprises a rotor rotatable about an axis and a fixed stator surrounding the rotor. In alternator mode, when the rotor is rotating, it induces a magnetic field to the stator which transforms it into electric current to power the vehicle electronics and recharge the battery. In motor mode, the stator is electrically powered and induces a magnetic field driving the rotor in rotation.
    The stator is provided with an electrical winding comprising a plurality of electrical conductors. During operation of the rotating electrical machine, these electrical conductors heat up to a certain temperature level. If this temperature level is too high, the rotating electrical machine may be damaged. It is important to know as accurately as possible the temperature of the electrical winding, especially to control the rotating electrical machine to prevent overheating.
    The present invention aims to allow to determine the temperature of the winding of a stator accurately and reliably. For this purpose, the present invention therefore relates to a stator for a rotating electric machine of a motor vehicle. According to the present invention, the stator comprises: an electric winding, this winding comprising a plurality of electrical conductors, at least one insert mounted on the winding, at least one temperature measuring probe carried by said insert and comprising at least one sensitive element arranged to measure the temperature of the coil.
    The insert mounted on the winding allows the sensing element which measures the temperature to be as close as possible to the stator winding. Thus, the temperature of the stator winding is measured reliably and accurately. Thanks to the present invention, it is therefore possible to control the rotating electrical machine to prevent overheating of the stator which could damage said machine. In addition, the insert also protects the measuring probe.
    Advantageously, the sensitive element is arranged to be in thermal contact with at least one electrical conductor via the insert.
    In particular, the sensitive element is arranged to be in thermal contact with at least one electrical conductor through a wall of the insert.
    In an advantageous example of implementation, the insert has a housing for receiving the measuring probe.
    According to an advantageous embodiment, the housing having a front wall facing the winding, the sensitive element is positioned in the housing in axial contact with the front wall which is in contact with the electrical conductor.
    In addition, advantageously, the housing has a shape arranged to hold the measurement probe.
    According to an advantageous example of implementation, the housing comprises a holding portion which is configured to hold the measurement probe. For example, the holding portion has a cylinder shape whose one end is closed.
    Advantageously, the insert has an insertion portion opening into the housing and allowing the insertion of the material into the housing. The insertion portion advantageously has a convergent shape towards the housing.
    According to an advantageous example of implementation, the housing comprises at least one holding groove. Advantageously, the holding groove protrudes from a wall of the housing. Still advantageously, the holding groove extends in an axial direction. This holding groove makes it possible to improve the maintenance of the measurement probe.
    In particular, the housing has several holding grooves. Advantageously, these holding grooves extend, respectively, from the front wall of the housing and from the rear wall, axially opposed to the front wall. Advantageously, the holding grooves of the front wall and that of the rear wall are offset along the housing. In other words, these grooves are not facing each other.
    According to an advantageous example of implementation, a housing wall extends in a direction which forms a non-zero angle with a radial plane relative to the axis of the stator. This also improves the maintenance of the measuring probe. For example, said wall of the housing is the front wall.
    Advantageously, the housing comprises a material in which is at least partially embedded, the measuring probe. This also makes it possible to improve the holding of the measuring probe by guaranteeing it a precise position and also makes it possible to protect said measuring probe.
    For example, this material is a resin. Alternatively, this material may be a varnish or an adhesive.
    Advantageously, the housing comprises an opening arranged to allow the insertion of the measuring probe. Advantageously, this opening is also arranged to allow insertion of the material into the housing.
    According to an advantageous exemplary embodiment, the insert comprises a mounting member arranged to mount said part on the winding.
    For example, the mounting member advantageously comprises a latching lug cooperating with the winding. Alternatively, the insert can be mounted on the winding by welding or gluing or by screwing or by tying.
    In an advantageous embodiment, each electrical conductor has a bar shape such as a pin, the insert being mounted on a section of electrical conductor overlapping a top of the bun.
    Advantageously, the insert is formed of a thermally conductive material. This improves the reliability of the measurement of the winding temperature. In addition, this material is, in particular, electrically insulating.
    Advantageously, the insert comprises a plastic material.
    In addition, the insert is advantageously monobloc.
    According to an advantageous mode of implementation, the measurement probe is a negative thermal coefficient (NTC) sensor.
    Advantageously, the measurement probe further comprises at least one electrical wire arranged to transmit an electrical signal to an electronic assembly, the electronic assembly being in particular mounted on the rotating electrical machine.
    Advantageously, the housing further comprises an opening arranged to allow the passage of at least one electrical wire from the measurement probe to the electronic assembly. For example, this opening and that allowing insertion of the measuring probe form a single opening.
    In an advantageous embodiment, the insert is arranged on a stator bun, in particular opposite the electronic assembly.
    The present invention also relates to a rotating electrical machine. The rotating electrical machine can advantageously form an alternator or a reversible machine.
    The present invention will be better understood on reading the following detailed description, non-limiting examples of implementation of the invention and the examination of the attached drawings, in which: - Figure 1 represents, schematically and partially, a sectional view of a rotating electrical machine according to an exemplary implementation of the invention, - Figure 2 shows, schematically and partially, a perspective view of an example of a stator of Figure 1, FIG. 3 represents, schematically and partially, a perspective view of an exemplary insert of FIG. 1; FIG. 4 shows, schematically and partially, a sectional view of the insert of FIG. 3; FIG. 5 represents, schematically and partially, a perspective view of another example of insert of FIG. 1; FIG. 6 represents, schematically and partially, a side view; of an embodiment of the insert of FIG. 5; FIG. 7 is a diagrammatic and partial view of the insert of FIG. 5; FIG. 8 shows, schematically and partially, a view of in perspective of another example of an insert of FIG. 1, FIG. 9 represents, schematically and partially, a perspective view of an exemplary embodiment of the insert of FIG. 8, FIG. schematically and partially, a sectional view of the insert of Figure 8, and - Figure 11 shows, schematically and partially, a bottom view of the insert of Figure 8.
    Identical, similar or similar elements retain the same references from one figure to another.
    FIG. 1 represents a rotating electrical machine 1 compact and polyphase, in particular for a motor vehicle. This rotating electrical machine 1 transforms mechanical energy into electrical energy, into alternator mode, and can operate in motor mode to transform electrical energy into mechanical energy. This rotary electrical machine 1 is, for example, an alternator or a reversible machine.
    The rotary electrical machine 1 comprises a housing 2. Inside this housing 2, it further comprises a shaft 3, a rotor 4 integral in rotation with the shaft 3 and a stator 5 surrounding the rotor 4. The rotational movement of the rotor 4 is around an axis X. In the remainder of the description the radial, ortho-radial and axial orientations are to be considered with respect to this axis X.
    In this example, the housing 2 comprises a front bearing 6 and a rear bearing 7 which are assembled together. These bearings 6, 7 are of hollow form and each bear, centrally, a respective ball bearing 10, 11 for the rotational mounting of the shaft 3.
    A pulley 12 is fixed on a front end of the shaft 3, at the front bearing 6, for example by means of a nut bearing on the bottom of the cavity of this pulley. This pulley 12 transmits the rotational movement to the shaft 3. The rear end of the shaft 3 carries, here, slip rings belonging to a collector. Brushes belonging to a brush holder 8 are arranged so as to rub on the slip rings. The brush holder 8 is connected to a voltage regulator included in a rectifier bridge 9.
    The front bearing 6 and the rear bearing 7 may further comprise substantially lateral openings for the passage of air in order to allow the cooling of the rotary electric machine by air circulation generated by the rotation of a fan. before 13 on the front dorsal face of the rotor 4, that is to say at the front bearing 6 and a rear fan 14 on the rear dorsal face of the rotor, that is to say at the level of the bearing back 7.
    In this exemplary embodiment, the stator 5 comprises a body 15 in the form of a pack of sheets with notches, for example of the semi-closed or open type, equipped with slot insulator for mounting an electric winding. 16. This coil 16 passes through the notches of the body 15 and form a front bun and a rear bun on both sides of the stator body. The coil 16 is connected, for example, in a star or in a triangle. This coil 16 comprises a plurality of electrical conductors 22.
    In this example, the rotor 4 is a claw rotor. It comprises two pole wheels 17. Each pole wheel 17 is formed of a flange 18 and a plurality of claws 19 forming magnetic poles. The flange 18 is of transverse orientation and has, for example, a substantially annular shape. This rotor 4 further comprises a cylindrical core 20 which is interposed axially between the pole wheels 17. Here, this core 20 is formed of two half-cores each belonging to one of the pole wheels 17. The rotor 4 comprises, between the core 20 and the claws 19, a coil 21 having, here, a winding hub and an electric winding on this hub. For example, the collector rings belonging to the collector are connected by wire bonds to said coil. The rotor 4 may also comprise magnetic elements interposed between two adjacent claws.
    When the electric winding is electrically powered from the brushes, the rotor 4 is magnetized and becomes an inductor rotor with formation of north-south magnetic poles at the claws 19. This inductor rotor creates an alternating induced current in the stator induced when the shaft 3 is rotating. The rectifier bridge 9 then transforms this AC induced current into a direct current, in particular to supply the loads and the consumers of the motor vehicle's onboard network as well as to recharge its battery.
    FIG. 2 illustrates an example of a stator 5 for a rotating electrical machine 1 of a motor vehicle. In addition, the stator 5 comprises: - at least one insert 25 mounted on the winding 16, - at least one temperature measuring probe 23 carried by said insert 25 and comprising at least one sensitive element 24 arranged to measure the temperature of the winding 16.
    Preferably, the sensitive element 24 is arranged to be in thermal contact with at least one electrical conductor 22 via the insert 25.
    In particular, the sensitive element 24 is arranged to be in thermal contact with at least one electrical conductor 22 via a wall of the insert 25.
    In the various examples shown, the insert 25 has a housing 26 for receiving the measuring probe 23.
    Still in these examples, the housing 26 having a front wall 27 facing the winding 16, the sensitive element 24 is positioned in the housing 26 in axial contact with the front wall 27 which is in contact with the electrical conductor 22.
    The housing 26 has, in these examples, a shape arranged to hold the measuring probe 23.
    In addition, the housing 26 comprises, here, a material 28 in which is at least partially embedded the measurement probe 23.
    For example, the material 28 is a resin.
    Alternatively, the material 28 may be a varnish or an adhesive.
    In addition, the housing 26 comprises, here, an opening 29 arranged to allow the insertion of the measuring probe 23. Preferably, this opening 29 is also arranged to allow the insertion of the material 28 into the housing 26.
    The insert 25 comprises, in these examples, a mounting member 30 arranged to mount the insert 25 on the coil 16. For example, the mounting member 30 comprises a latching lug cooperating with the winding 16. Alternatively the insert 25 may be mounted on the winding 16 by welding or gluing or by screwing or by tying.
    In the example shown here, the electrical conductors 22 are each in the form of bars such as pins connected together. Alternatively, the coil 16 can be obtained from a continuous wire covered with enamel.
    The insert 25 is here arranged on one of the bunts of the stator 5. For example, the insert 25 is arranged on the rear bun next to an electronic assembly. The electronic assembly is here mounted on the rear part of the rotating electrical machine, that is to say axially opposed to the pulley 12.
    In these examples, the insert 25 is mounted on a section of electrical conductor 22 overlapping an apex of the bun.
    Preferably, the insert 25 is formed of a thermally conductive material. In addition, this material is, in particular, electrically insulating. For example, the insert 25 comprises a plastic material.
    Still preferably, the insert 25 is integral.
    Preferably, the measurement probe 23 is a negative thermal coefficient (NTC) sensor.
    In addition, the measurement probe 23 comprises, here, at least one electrical wire 34 arranged to transmit an electrical signal to the electronic assembly.
    In addition, in these examples, the housing 26 has an opening arranged to allow passage of at least one electrical wire 34 from the measurement probe 23 to the electronic assembly. For example, this opening and the opening 29 for insertion of the measuring probe form a single opening.
    Figures 2, 3 and 4 show a first embodiment of the insert 25.
    In this first example, the housing 26 has a holding portion 31 which is configured to hold the measuring probe 23.
    In addition, the insert 25 comprises, here, an insertion portion 32 opening into the housing 26 and allowing the insertion of the material 28 into said housing 26.
    For example, the holding portion 31 has a cylinder shape whose one end is closed.
    For example, the insertion portion 32 has a convergent shape towards the housing 26.
    Figures 5, 6 and 7 show a second embodiment of the insert 25.
    In this second example, the housing 26 comprises at least one holding groove 33.
    The holding groove 33 extends, for example, projecting from one of the walls of the housing 26.
    In addition, the holding groove 33 extends here in an axial direction.
    For example, the housing 26 has a plurality of retaining grooves 33. In this case, these retaining grooves 33 can extend, respectively, from the front wall 27 of the housing 26 and from the rear wall, axially opposite to the front wall 27.
    Still for example, the retaining grooves 33 of the front wall 27 and that of the rear wall are offset along the housing 26. In other words, these retaining grooves 33 are not facing each other.
    Figures 8, 9, 10 and 11 show a third embodiment of the insert 25.
    In this third example, one of the walls of the housing 26 extends in a direction which forms a non-zero angle with a radial plane of the axis X. For example, said wall of the housing 26 is the front wall 27.
    Moreover, in this third example, the housing 26 comprises at least one retaining groove 33. The retaining groove 33 extends, here, protruding from one of the walls of the housing 26. In addition, the groove retaining 33 extends here in a transverse direction.
    Positioning the measuring probe as close as possible to the electrical winding of the stator, and in particular in thermal contact with this winding via the insert, ensures a reliable and accurate measurement of the temperature of said winding. In addition, this arrangement of the measurement probe makes it possible to maintain optimum performance of the stator.
    The use of an insert makes it easy and safe to hold the probe to ensure accurate temperature measurement. In addition, the insert also protects the measuring probe.
    The present invention finds applications in particular in the field of stators for alternator or reversible machine of a motor vehicle but it could also apply to any type of rotating machine.
    Of course, the foregoing description has been given by way of example only and does not limit the scope of the present invention which would not be overcome by replacing the various elements by any other equivalents.
    权利要求:
    Claims (15)
    [1" id="c-fr-0001]
    1. Stator for a rotary electric machine of a motor vehicle, the stator (5) comprising: an electric winding (16), this winding comprising a plurality of electrical conductors (22), at least one insert (25) mounted on the winding (16), - at least one measuring probe (23) of temperature carried by said insert (25) and having at least one sensitive element (24) arranged to measure the temperature of the coil (16).
    [2" id="c-fr-0002]
    2. Stator according to claim 1, characterized in that the sensing element (24) is arranged to be in thermal contact with at least one electrical conductor (22) via the insert (25).
    [3" id="c-fr-0003]
    3. Stator according to claim 1 or 2, characterized in that the insert (25) comprises a housing (26) for receiving the measuring probe (23).
    [4" id="c-fr-0004]
    4. Stator according to claim 3, characterized in that, the housing (26) having a front wall (27) facing the coil (16), the sensitive element (24) is positioned in the housing (26) in contact axial with the front wall (27) which is in contact with the electrical conductor (22).
    [5" id="c-fr-0005]
    5. Stator according to claim 3 or 4, characterized in that the housing (26) has a shape arranged to hold the measuring probe (23).
    [6" id="c-fr-0006]
    6. Stator according to any one of claims 3 to 5, characterized in that the housing (26) comprises at least one holding groove (33).
    [7" id="c-fr-0007]
    7. Stator according to any one of claims 3 to 6, characterized in that a wall of the housing (26) extends in a direction which forms a non-zero angle with a radial plane with respect to the axis (X ) of the stator (5).
    [8" id="c-fr-0008]
    8. Stator according to any one of claims 3 to 7, characterized in that the housing (26) comprises a material (28) in which is embedded, at least partially, the measuring probe (23).
    [9" id="c-fr-0009]
    9. Stator according to any one of revendicatio'ns 3 to 8, characterized in that the housing (26) has an opening (29) arranged to allow the insertion of the measuring probe.
    [10" id="c-fr-0010]
    10. Stator according to any one of claims 1 to 9, characterized in that the insert (25) comprises a mounting member (30) arranged to mount said part on the coil (16).
    [11" id="c-fr-0011]
    11. Stator according to any one of claims 1 to 10, characterized in that the insert (25) is formed of a thermally conductive material.
    [12" id="c-fr-0012]
    12. Stator according to any one of claims 1 to 11, characterized in that the insert (25) is in one piece.
    [13" id="c-fr-0013]
    13. Stator according to any one of claims 1 to 12, characterized in that the insert (25) is arranged on a bun stator (5), in particular opposite an electronic assembly.
    [14" id="c-fr-0014]
    14. A rotating electrical machine comprising a stator according to any one of claims 1 to 13.
    [15" id="c-fr-0015]
    15. A rotary electric machine according to claim 14, forming an alternator or a reversible machine.
    类似技术:
    公开号 | 公开日 | 专利标题
    FR3046507B1|2019-07-19|STATOR FOR A ROTATING ELECTRIC MACHINE
    WO2017118786A1|2017-07-13|Stator for a rotary electric machine
    EP1897210A1|2008-03-12|Projecting pole rotor comprising coil end support plates and rotary electric machine comprising one such rotor
    EP3104501B1|2017-12-20|Rotor for rotary electric machine
    WO2016207537A1|2016-12-29|Connector-comprising stator equipped with a unit for measuring temperature and electric machine including such a stator
    EP3005535B1|2019-12-18|Electric machine furnished with a system for guiding at least one connection wire of a measurement probe and corresponding guiding system
    WO2017009550A1|2017-01-19|Rotary electric machine for a motor vehicle
    FR3046506B1|2019-06-21|STATOR FOR A ROTATING ELECTRIC MACHINE
    WO2019063306A1|2019-04-04|Liquid cooling circuit for a rotary electric machine
    WO2018167398A1|2018-09-20|Brush holder for a rotating electrical machine
    EP3646445A1|2020-05-06|Mechanical assembly with electrical insulation between a rotating electrical machine and its electronic part
    EP3226387A1|2017-10-04|Brush holder for rotary electrical machine provided with a built-in temperature sensor
    WO2018100309A1|2018-06-07|Rotor for a rotating electrical machine
    FR3065338A1|2018-10-19|ROTATING ELECTRIC MACHINE HAVING A DEVICE FOR MEASURING THE ANGULAR POSITION OF THE ROTOR WITH IMPROVED CONFIGURATION
    FR3036554A1|2016-11-25|ROTATING ELECTRIC MACHINE
    FR3067884B1|2019-07-05|BROOM HOLDER FOR ROTATING ELECTRIC MACHINE
    FR3055756B1|2019-08-09|ROTATING ELECTRICAL MACHINE COMPRISING A DEMONABLE ELECTRONIC ASSEMBLY
    FR3105645A1|2021-06-25|Rotating electric machine rotor
    WO2021122961A1|2021-06-24|Rotating electric machine comprising a temperature sensor
    FR3083389A1|2020-01-03|POLAR ROTOR WHEEL FOR ROTATING ELECTRIC MACHINE
    WO2021122954A1|2021-06-24|Rotating electric machine with a temperature sensor
    EP3642943A1|2020-04-29|Brush holder for a rotating electrical machine
    WO2017037389A1|2017-03-09|Rotor for a rotary electric machine
    FR3088503A1|2020-05-15|ROTOR FAN FOR ROTATING ELECTRIC MACHINE
    FR3090230A1|2020-06-19|Anti-rotation system for stator of rotating electric machine
    同族专利:
    公开号 | 公开日
    EP3190688B1|2020-05-27|
    EP3190688A1|2017-07-12|
    FR3046507B1|2019-07-19|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US20100270873A1|2009-04-27|2010-10-28|Sanyo Electric Co., Ltd.|Electric motor and electric motor vehicle|
    WO2013030644A2|2011-08-31|2013-03-07|Toyota Jidosha Kabushiki Kaisha|Rotary electric machine|
    JP2013225959A|2012-04-20|2013-10-31|Toyota Motor Corp|Stator for rotary electric machine and method for manufacturing the same|
    WO2014041265A2|2012-09-17|2014-03-20|Valeo Equipements Electriques Moteur|Coil insulator capable of receiving a temperature sensor, and corresponding stator interconnector and bearing for temperature sensor|
    US20150155760A1|2013-11-29|2015-06-04|Mitsubishi Electric Corppration|Rotary electric machine, rotary electric machine stator, and rotary electric machine stator manufacturing method|WO2021122961A1|2019-12-20|2021-06-24|Valeo Equipements Electriques Moteur|Rotating electric machine comprising a temperature sensor|
    WO2021122954A1|2019-12-20|2021-06-24|Valeo Equipements Electriques Moteur|Rotating electric machine with a temperature sensor|JP3699025B2|2001-09-19|2005-09-28|株式会社日立製作所|Mounting structure of winding temperature detecting element of electric motor and electric motor using the same|
    JP4751942B2|2009-06-17|2011-08-17|アイシン精機株式会社|Stator|FR3064333B1|2017-03-27|2021-10-29|Valeo Equip Electr Moteur|CABLE FIXING BODY|
    DE102018131973A1|2018-12-12|2020-06-18|Thyssenkrupp Ag|Stator and electrical machine|
    DE102019202912A1|2019-03-05|2020-09-10|Zf Friedrichshafen Ag|Interconnection arrangement for a stator, temperature sensor device and system for detecting a temperature|
    法律状态:
    2017-01-31| PLFP| Fee payment|Year of fee payment: 2 |
    2017-07-07| PLSC| Publication of the preliminary search report|Effective date: 20170707 |
    2018-01-31| PLFP| Fee payment|Year of fee payment: 3 |
    2020-01-31| PLFP| Fee payment|Year of fee payment: 5 |
    2021-01-28| PLFP| Fee payment|Year of fee payment: 6 |
    2022-01-31| PLFP| Fee payment|Year of fee payment: 7 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1650029A|FR3046507B1|2016-01-05|2016-01-05|STATOR FOR A ROTATING ELECTRIC MACHINE|
    FR1650029|2016-01-05|FR1650029A| FR3046507B1|2016-01-05|2016-01-05|STATOR FOR A ROTATING ELECTRIC MACHINE|
    EP16204111.5A| EP3190688B1|2016-01-05|2016-12-14|Stator for rotary electric machine|
    [返回顶部]