• 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 invention relates to an electromagnetic retarder (4) and generator (8) assembly (2), said assembly (2) comprising a rotor (10), an armature (32) of retarder carried by the rotor, an inductor (44) of generator carried the rotor, a stator (12) comprising a sleeve (46) having an external axial face (56) and an internal axial face (58), a retarder inductor (66) disposed on the external axial face (56) of the stator and a generator armature (72) arranged on the internal axial face (58) of the stator, characterized in that the sleeve (46) comprises at least one body (74) of non-magnetic material arranged between the inductor (66) of the retarder and armature (72) of the generator.
    公开号:FR3083386A1
    申请号:FR1855848
    申请日:2018-06-28
    公开日:2020-01-03
    发明作者:Marie-Pierre BERNICOT；Mbarek AKAFOU；Rafik LOUNIS；Nicolas QUENNET
    申请人:Telma SA；
    IPC主号:
    专利说明:

    Electromagnetic retarder and generator assembly and vehicle comprising such an assembly
    The invention relates to an electromagnetic eddy current retarder assembly and a generator suitable for supplying this retarder, as well as to a utility vehicle.
    Electromagnetic retarders reduce the speed of rotation of a rotating machine. Such retarders are generally used as a booster or endurance braking device in commercial vehicles such as coaches or trucks. Such retarders can also be used in cable cars or elevators.
    Document EP 1 014 545 discloses an assembly comprising an electromagnetic retarder and a generator capable of supplying this electromagnetic retarder. The assembly includes a rotor secured to a drive shaft and a stator crossed coaxially by the drive shaft. The generator is capable of generating an electric current from the rotary movement of the rotor relative to the stator. The stator comprises a cylindrical part secured to the housing of a gearbox. The rotor consists of two coaxial sleeves connected by a flange. The cylindrical part of the stator is arranged between the two sleeves of the rotor and at a short distance from them. The external face of the cylindrical part of the stator includes an inductor capable of generating eddy currents in the external sleeve of the rotor. This outer sleeve constitutes the armature of the retarder. The generator includes an inductor arranged on the external face of the internal sleeve of the rotor and an armature arranged on the internal face of the stator cylinder.
    However, this set presents operating difficulties
    Indeed, the permanent magnets of the integrated generator can be demagnetized due to the high temperatures of the stator. The stator is heated first by the radiation from the rotor during the braking phases, and then by conduction of the heat produced by the Joule effect in the inductor of the retarder and the armature of the generator. For example, the maximum temperature tolerated for neodymium magnets (called NdfeB type magnet) is 180 ° C. When this temperature is exceeded, the efficiency of the generator is degraded very quickly. As a result, the performance of the “retarder” function also degrades because they directly depend on the generator's output.
    The object of the present invention is to provide a more reliable retarder and generator assembly.
    To this end, the subject of the present invention is an electromagnetic retarder and generator assembly, said assembly comprising a rotor, a retarder armature carried by the rotor, a generator inductor carried by the rotor, a stator comprising a sleeve having an external axial face. and an internal axial face, a retarder inductor arranged on the external axial face of the stator and a generator armature arranged on the internal axial face of the stator, said sleeve extending around an axis of revolution, characterized in that the sleeve comprises at least one body made of non-magnetic material arranged between the inductor of the retarder and the armature of the generator.
    According to particular embodiments, the assembly includes one or more of the following characteristics:
    - Said at least one non-magnetic body is arranged in a circular annular shape coaxial with the axis of revolution and extends in a plane perpendicular to the axis of revolution;
    - The sleeve comprises several bodies made of non-magnetic material;
    - each body of non-magnetic material has the shape of an arc of a circle;
    the inductor of the retarder comprises magnetic poles projecting radially outward from the external axial face of the sleeve, and in which each non-magnetic body is aligned with a magnetic pole in a radial direction, said radial direction being perpendicular to the axis of revolution;
    - Said non-magnetic bodies have through openings extending in a direction parallel to the axis of revolution;
    - The generator inductor comprises a magnet holder block and several permanent magnets arranged inside said magnet holder;
    - in which a radial direction is a direction perpendicular to the axis of revolution and in which said permanent magnets extend with their North-South axis disposed at an angle relative to a radial direction;
    - the rotor includes:
    • a cylindrical casing having an internal axial face arranged opposite the external axial face of the stator, • a crown housed inside said cylindrical casing, said crown having an external axial face arranged in line with the internal axial face of the stator ; the armature of the retarder being arranged on the internal axial face of the rotor and the inductor of the generator being carried by the external axial face of the crown;
    The invention also relates to a utility vehicle comprising a drive device, a rotary shaft driven in rotation about its axis by said drive device and an electromagnetic retarder and generator assembly as described above.
    The invention will be better understood on reading the description which follows, given solely by way of example and made with reference to the figures in which:
    - Figure 1 is an axial sectional view of an assembly according to the present invention;
    - Figure 2 is a radial sectional view of the assembly illustrated in Figure 1;
    - Figure 3 is an axial sectional view of a rotor according to a first embodiment of the invention;
    - Figure 4 is a perspective view of the rotor illustrated in Figure 3;
    - Figure 5 is an axial sectional view of a rotor according to a second embodiment of the invention;
    - Figure 6 is a perspective view of the stator of the assembly according to the invention and of a part of a housing of a gearbox or a bridge.
    In the following description, the terms "right" and "left" are defined when the generator retarder assembly according to the invention is arranged as illustrated in the figures, and are in no way limiting.
    With reference to FIGS. 1 and 2, the assembly 2 electromagnetic retarder and generator according to the present invention comprises an electromagnetic retarder with eddy current 4 capable of slowing down the rotation of a rotary shaft 6 and a generator 8 intended to supply this retarder electrically. electromagnetic.
    This assembly 2 can be mounted on the rotary shaft 6 coming out of a drive device of a utility vehicle such as a coach, a truck or a heavy vehicle or of an engine of an elevator or a cable car.
    This assembly 2 comprises a rotor 10 suitable for rotating in rotation with the rotary shaft 6 of the drive device and a stator 12 intended to be fixed to a housing 14 of the gearbox or of the bridge of this drive device.
    Referring to Figure 3, the rotor 10 comprises a cylindrical casing 16 provided at its left end with a radial flange 18 extending inwardly and a ring 20 provided at its right end with a radial flange 22 s' extending inward and defining an opening 24.
    The left end of the crown 20 is fixed to the radial flange 18, by screws 26 so that the crown 20 extends inside the cylindrical envelope 16. The cylindrical envelope 16, the radial flange 18 and the crown 20 form an annular housing 28 having a radial face open in the direction of the housing 14.
    The cylindrical casing 16 and the crown 20 are circular and have the same axis of revolution A-A. The opening 24 is also centered on this axis of revolution A-A. This axis of revolution A-A coincides with the axis of rotation
    X-X of the rotary shaft 6 of the drive device when the generator retarder assembly 2 is mounted on the drive device.
    The cylindrical envelope 16 includes an internal axial face 30 which constitutes the armature 32 of the retarder 4.
    The rotor 10 further comprises a transmission flange 34 intended to carry the rotary shaft 6 of the drive device and an intermediate piece 36 of annular shape suitable for securing in rotation the rotor 10 to the rotary shaft 6. At this in fact, the intermediate piece 36 is provided with grooves capable of engaging in complementary grooves of the rotary shaft 6 so as to secure the rotor 10 to the rotary shaft 6.
    The transmission flange 34 is fixed against the right face of the radial rim 22 and the intermediate piece 36 is fixed against the left face of the radial rim 22 by screws 38.
    Referring to Figure 4, the rotor 10 further comprises a magnet holder block 40 fixed, for example by screws 26, on the external axial face 41 of the crown 20. This magnet holder block 40 includes permanent magnets 42 buried at inside the block. The magnet holder block 40 is made of laminated sheet metal, laminated sheet metal or sintered material. The permanent magnets 42 are positioned with their North-South axis at an angle to a radial direction. In particular, the permanent magnets 42 are arranged in pairs. Each pair of magnets is arranged in a V-shaped pattern open towards the cylindrical casing 16.
    As a variant, the pairs of permanent magnets 42 are arranged in a closed V pattern in the direction of the cylindrical envelope 16.
    According to another variant, the permanent magnets 42 are arranged flat on the external axial face 41 of the crown 20.
    These permanent magnets 42 constitute the inductor 44 of the generator 8.
    As the permanent magnets 42 are buried, they are less influenced by the magnetic field generated by the inductor of the retarder.
    As a variant, the permanent magnets 42 are fixed directly to the external axial face 41 of the crown 20, for example by gluing.
    According to a variant shown in Figure 5, the cylindrical casing 16 and the crown 20 are formed in one piece. In this embodiment, the permanent magnets 42 are fixed directly to the external axial face 41 of the crown.
    With reference to FIGS. 1, 2 and 6, the stator 12 comprises a sleeve 46 of circular section and a radial bottom 48 pierced with a central opening 50.
    When the assembly 2 is assembled, the sleeve 46 extending around the same axis of revolution A-A as the cylindrical casing 16 and the crown 20.
    The radial bottom 48 is fixed by means of screws 52 to a stator support 54. The stator support 54 is itself fixed to the housing 14 of the gearbox or of the bridge, as visible in FIG. 1.
    The sleeve 46 is arranged in the housing 28 formed by the cylindrical casing 16 and the crown 20 of the rotor.
    The sleeve 46 has an external axial face 56 disposed opposite the internal axial face 30 of the cylindrical envelope and an internal axial face 58 disposed opposite and at a short distance from the magnet holder block 40 of the stator.
    The external axial face 56 is provided with poles extending towards the outside of the external axial face. These poles 60 are surrounded by electrically conductive wires 62. Floats 63 of magnetic flux described in patent FR 2 757 705 issued in the name of the company Telma are fixed by screws to the free ends of the radial projections 60. The radial projections 60, their respective windings 62 and the openings 63 form multiple magnetic poles 64 with alternating polarities. The set of magnetic poles 64 arranged circularly constitutes the inductor 66 of the retarder.
    The internal axial face 58 is provided with radial grooves 68 forming cores. These cores are surrounded by conductive electrical wires not shown in the figures. The cores and their windings of electric wires constitute magnetic poles 70 multiple three-phase. The set of magnetic poles 70 forms the armature 72 of the generator.
    Referring to Figures 2 and 6, the sleeve 46 comprises several bodies 74 of non-magnetic material arranged between the external axial face 56 and the internal axial face 58 of the sleeve.
    In particular, the bodies 74 of non-magnetic material are located between the inductor 66 of the retarder and the armature 72 of the generator. The non-magnetic bodies 74 are arranged in a circular annular shape coaxial with the axis of revolution A-A. The non-magnetic bodies 74 extend in a radial plane (that is to say in a plane perpendicular to the axis of revolution A-A).
    These bodies 74 of non-magnetic material form a magnetic barrier between the lines of magnetic fields generated between the armature 32 and the inductor 66 of the retarder and on the other hand the lines of magnetic fields generated between the armature 72 and the inductor 44 of the generator.
    According to the embodiment shown, the stator has a number of non-magnetic bodies 74 equal to the number of magnetic poles 64 of the inductor 66 of the retarder and each non-magnetic body 74 is aligned with a magnetic pole 66 in a radial direction.
    According to the embodiment shown, each non-magnetic body 74 has the shape of an arc of a circle.
    The non-magnetic bodies may include through holes or be entirely formed by through holes. The through holes extend in a direction parallel to the axis of revolution A-A. Advantageously, these through holes simultaneously make it possible to cool the stator.
    Alternatively, the non-magnetic bodies are made of aluminum, rubber, non-magnetic stainless steel, cast iron, magnesium, carbon fiber, sintered powder, etc. In this case, the stator is made of laminated sheet, laminated sheet or sintered material.
    As a variant, the sleeve comprises a single non-magnetic body forming a non-traversing circular groove coaxial with the axis of revolution A-A. This groove extends in a radial plane, that is to say in a plane perpendicular to the axis of revolution A-A. This groove can be empty or filled with aluminum rubber etc.
    In operation, the rotation of the rotor 10 relative to the stator 12 generates a current in the conductive electrical wires of the magnetic poles 70 of the armature of the generator. This current is rectified by a rectifier not shown. When the driver of the vehicle actuates the electromagnetic retarder 4, the electricity leaving the rectifier supplies the windings 62 of the magnetic poles 64 of the inductor of the electromagnetic retarder 4.
    The magnetic fields created by the armature of the retarder generate eddy currents on the internal face of the cylindrical casing 16. These Foulcault currents make it possible to slow the rotor relative to the stator.
    The invention also relates to a utility vehicle comprising a drive device, a rotary shaft 6 driven in rotation about its axis by said drive device and an assembly 2 electromagnetic retarder and generator, as described above.
    权利要求:
    Claims (10)
    [1" id="c-fr-0001]
    1, - Assembly (2) electromagnetic retarder (4) and generator (8), said assembly (2) comprising a rotor (10), an armature (32) of retarder carried by the rotor (10), an inductor (44) generator carried the rotor (10), a stator (12) comprising a sleeve (46) having an external axial face (56) and an internal axial face (58), a retarder inductor (66) disposed on the external axial face (56) of the stator and an armature (72) of a generator arranged on the internal axial face (58) of the stator, said sleeve (46) extending around an axis of revolution (AA), characterized in that the sleeve (46) comprises at least one body (74) of non-magnetic material arranged between the inductor (66) of the retarder and the armature (72) of the generator.
    [2" id="c-fr-0002]
    2, - assembly (2) according to claim 1, wherein said at least one non-magnetic body (74) is arranged in a circular annular shape coaxial with the axis of revolution (AA) and extends in a plane perpendicular to l 'axis of revolution (AA).
    [3" id="c-fr-0003]
    3, - assembly (2) according to any one of claims 1 and 2, wherein the sleeve (46) comprises several bodies (74) of non-magnetic material.
    [4" id="c-fr-0004]
    4, - assembly (2) according to claim 3, wherein each body (74) of non-magnetic material has the shape of an arc of a circle.
    [5" id="c-fr-0005]
    5, - assembly (2) according to any one of claims 3 and 4, in which the inductor (66) of the retarder comprises magnetic poles (64) projecting radially outward from the external axial face (56) of the sleeve, and wherein each non-magnetic body (74) is aligned with a magnetic pole (64) in a radial direction, said radial direction being perpendicular to the axis of revolution (AA).
    [6" id="c-fr-0006]
    6. - assembly (2) according to any one of claims 3 to 5, wherein said non-magnetic bodies (74) have through openings extending in a direction parallel to the axis of revolution (A-A).
    [7" id="c-fr-0007]
    7, - assembly (2) according to any one of claims 1 to 6, wherein the inductor (44) of the generator comprises a magnet holder block (40) and several permanent magnets (42) arranged inside of said magnet holder (40).
    [8" id="c-fr-0008]
    8. - assembly (2) according to claim 7, in which a radial direction is a direction perpendicular to the axis of revolution (AA) and in which said permanent magnets (42) extend with their North-South axis arranged in bias relative to a radial direction.
    [9" id="c-fr-0009]
    9, - assembly (2) according to any one of claims 1 to 8, in which the rotor (10) comprises:
    a cylindrical casing (16) having an internal axial face (30) arranged opposite the external axial face (56) of the stator (12),
    - a crown (20) housed inside said cylindrical casing (16), said crown (20) having an external axial face (41) arranged in line with the internal axial face (58) of the stator (12); the armature (32) of the retarder (4) being arranged on the internal axial face (30) of the rotor (10) and the inductor (44) of the generator (8) being carried by the external axial face (41) of the crown (16).
    [10" id="c-fr-0010]
    10 - Utility vehicle comprising a drive device, a rotary shaft (6) driven in rotation about its axis by said drive device and an assembly (2) electromagnetic retarder and generator according to any one of claims 1 to 9 .
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    同族专利:
    公开号 | 公开日
    FR3083386B1|2021-05-14|
    CA3048261A1|2019-12-28|
    EP3588754A1|2020-01-01|
    CN110661377A|2020-01-07|
    US20200007019A1|2020-01-02|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
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    JP2002095236A|2000-09-13|2002-03-29|Sawafuji Electric Co Ltd|Exciter for retarder|
    FR2757705B1|1996-12-20|1999-03-05|Labavia|EDDY CURRENT APPARATUS|
    JP2000228862A|1998-12-22|2000-08-15|Sawafuji Electric Co Ltd|Eddy current cylinder for retarder|
    DE60329888D1|2002-05-28|2009-12-17|Isuzu Motors Ltd|Eddy-current deceleration device|
    CN2772881Y|2005-02-22|2006-04-19|万安集团诸暨汽车制动系统有限公司|Cylindrical speed inhibitor with rator and electric vortex for vehicle|
    CN100574060C|2006-03-02|2009-12-23|赵典军|Retarder for vehicles|
    CN201204540Y|2008-01-08|2009-03-04|林丽里|Mixed generator with built-in eddy current magneto resistance|
    CN101425737B|2008-12-02|2011-05-04|江苏大学|Self-excitation type speed inhibitor having water cooling system|
    CN102594090B|2012-03-09|2013-11-13|北京工业大学|Liquid cooling self-excitation type eddy current retarder with salient pole structure|
    CN202550860U|2012-03-19|2012-11-21|西安巨舟电子设备有限公司|Construction mechanism for disc type annular magnetic field|
    CN103683803A|2013-12-16|2014-03-26|北京工业大学|Electromagnetic liquid cooling retarder with double-claw-pole generator|
    US20160218585A1|2015-01-22|2016-07-28|Yuan-Kwei Tzeng|Electric power generation and brake device|
    CN104753310B|2015-04-06|2017-03-01|山东交通学院|A kind of self-excitation type retarding device and its control method|
    CN104935131A|2015-06-15|2015-09-23|东南大学|Composite flux-switching permanent magnet motor for internal heat dissipation|
    CN206948126U|2017-05-04|2018-01-30|刘霄|A kind of stator module and the disc type electric machine comprising the stator module|CN110350758A|2019-07-31|2019-10-18|泰乐玛公司|Electromagnetic retarder and generator assembly and vehicle comprising the component|
    CN113315327A|2021-05-12|2021-08-27|江苏铭纳阳智能装备有限公司|Two claw flaring mechanisms of new forms of energy motor coil|
    法律状态:
    2020-01-03| PLSC| Search report ready|Effective date: 20200103 |
    2020-03-13| ST| Notification of lapse|Effective date: 20200206 |
    2020-04-03| PLFP| Fee payment|Year of fee payment: 3 |
    2020-06-05| RN| Application for restoration|Effective date: 20200427 |
    2020-07-24| FC| Favourable decision of inpi director general on an application for restauration.|Effective date: 20200617 |
    2021-06-30| PLFP| Fee payment|Year of fee payment: 4 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1855848A|FR3083386B1|2018-06-28|2018-06-28|ELECTROMAGNETIC RETARDER AND GENERATOR AND VEHICLE SET CONTAINING SUCH A SET|
    FR1855848|2018-06-28|FR1855848A| FR3083386B1|2018-06-28|2018-06-28|ELECTROMAGNETIC RETARDER AND GENERATOR AND VEHICLE SET CONTAINING SUCH A SET|
    EP19180205.7A| EP3588754A1|2018-06-28|2019-06-14|Assembly comprising an electromagnetic retarder and generator assembly as well as vehicle comprising such an assembly|
    CN201910549659.5A| CN110661377A|2018-06-28|2019-06-24|Electromagnetic retarder and generator assembly and vehicle comprising same|
    US16/455,853| US20200007019A1|2018-06-28|2019-06-28|Electromagnetic retarder and generator assembly and vehicle comprising such an assembly|
    CA3048261A| CA3048261A1|2018-06-28|2019-06-28|Electromagnetic retarder and generator set and vehicle including such set|
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