• 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:
    Training installation (1) comprising an electric machine (2) with a rotor (5) and two output shafts (6) for driving two motor axes (7). The transmission path between the machine (2) and the axes (6) comprising a differential (3) and a planetary transmission (4). The electric machine (2) and the differential (3) are housed in the housing (10), and the differential (3) has a housing (11) and two output shafts (12). The housing (11) is attached to the rotor (5) and the one-stage planetary transmission (4) is coupled to each output shaft (12).
    公开号:FR3057821A1
    申请号:FR1759757
    申请日:2017-10-18
    公开日:2018-04-27
    发明作者:Kurt Reutlinger；Andreas Illmann；David Bauer；Jan Allgeier；Karl-Juergen Roth；Ralf Wegst
    申请人:Robert Bosch GmbH；
    IPC主号:
    专利说明:

    ® FRENCH REPUBLIC
    NATIONAL INSTITUTE OF INDUSTRIAL PROPERTY © Publication number: 3,057,821 (to be used only for reproduction orders) (© National registration number: 17 59757
    COURBEVOIE © IntCI 8
    B 60 K 04/17 (2017.01), B 60 K 1/00
    A1 PATENT APPLICATION
    ®) Date of filing: 18.10.17. © Applicant (s): ROBERT BOSCH GMBH— DE. © Priority: 20.10.16 DE 102016220630.3. @ Inventor (s): REUTLINGER KURT, ILLMANN ANDREAS, BAUER DAVID, ALLGEIER JAN, ROTH (43) Date of public availability of the KARL-JUERGEN and WEGST RALF. request: 04.27.18 Bulletin 18/17. ©) List of documents cited in the report preliminary research: The latter was not established on the date of publication of the request. (© References to other national documents ® Holder (s): ROBERT BOSCH GMBH. related: ©) Extension request (s): © Agent (s): CABINET HERRBURGER.
    INSTALLATION FOR DRIVING AN ELECTRICAL AXIS.
    FR 3 057 821 - A1 _ Drive installation (1) comprising an electric machine (2) with a rotor (5) and two output axes (6) to drive two motor axes (7). The transmission path between the machine (2) and the axes (6) comprising a differential (3) and a planetary transmission (4). The electric machine (2) and the differential (3) are housed in the housing (10), and the differential (3) has a housing (11) and two output axes (12).
    The housing (11) is fixed to the rotor (5) and the one-stage planetary transmission (4) is coupled to each output axis (12).
    16 9 10.1 33 25
    25 33 12 i
    Field of the invention
    The present invention relates to a drive installation for driving an electric axis comprising an electric machine whose rotor applies a motor torque to two axes of output from the drive installation to drive two motor axes of the electric axis, the transmission path between the electric machine and the output axes of the drive installation comprising a differential and at least one planetary transmission, the electric machine and the differential being housed in the housing of the drive installation and the differential having a differential housing and two differential output axes.
    State of the art
    An installation for driving an electric axis is already known according to document DE 10 2013 016 441 A1. This training installation comprises an electric machine in the form of an asynchronous motor and which, by its construction, rotates at a speed of relatively high rotation and provides relatively low torque. The rotor of the electric machine transmits a motor torque to two axes of output of the electric machine to drive two axes of drive of the electric axis. The transmission path between the electric machine and the output axes is equipped with a differential and a planetary transmission. The electric machine and the differential are housed in the housing of the drive system. The differential has a differential housing and two differential output axes. The speed of rotation of the electric machine is converted by the planetary transmission so that the output axes of the differential rotate at a lower speed than that of the rotor of the electric machine. To go from the high speed of rotation of the electric machine to the speed of rotation of the wheels of the vehicle, the planetary transmission of the drive installation has three stages of reduction which occupy a certain volume and are relatively expensive.
    Presentation and advantages of the invention
    The subject of the present invention is a drive installation of the type defined above, characterized in that the differential housing is fixed to the rotor of the electric machine and the planetary transmission to one stage is coupled to each output axis of the differential.
    The drive installation as defined above has the advantage of being less bulky and less expensive to manufacture.
    In other words according to the invention, the reduction in the speed of rotation is not done in the transmission path between the electric machine and the differential, but only downstream of the output axes of the differential in that the housing of the differential is fixed to the rotor of the electric machine and each output axis of the differential is coupled to a planetary transmission with one stage. The two planetary one-stage transmissions are smaller than those of the prior art planetary transmission and overall more economical than a three-stage planetary transmission because they only have to apply half the torque. Single-stage planetary transmissions also have advantages of quiet operation and efficiency compared to a multi-stage planetary transmission.
    In a particularly advantageous manner, the differential housing comprises a fixing segment, in particular a flange segment which is fixed to the fixing segment of the rotor, in particular a complementary flange segment. Thus, the differential housing is directly driven by the rotor of the electric machine.
    According to another advantageous characteristic, the rotor of the electric machine surrounds a cavity at least partially housing the differential. In this way, the rotor cavity is used as a housing, so that overall the drive installation is less bulky than that of the state of the art.
    It is very advantageous that the rotor of the electric machine and the differential housing have a common axis of rotation and are housed in two common rotation bearings which are supported respectively in a bearing panel of the drive housing. By this arrangement, the differential housing and the axes of the differential rotate at the same speed of rotation as the rotor of the electric machine.
    It is also advantageous for the differential housing to have two bearing supports, the outer sides of which are respectively provided with a rotation bearing and the inner sides are respectively provided with one of the differential output axes. Thus, the bearing supports rotate both the differential housing and the rotor of the electric machine as well as the output axes of the differential.
    According to another advantageous characteristic, the bearing panels each have a cavity for receiving one of the planetary transmissions and the cavities of the bearing panels protrude respectively into the cavity of the rotor of the electric machine. In this way, the planetary transmissions are integrated into the bearing panels and are thus at least partially housed in the cavity of the rotor of the electric machine so that overall the drive installation is very compact.
    It is further advantageous that the output axes of the differential are each coupled to a sun wheel of the respective planetary transmission. Thus, the speed of rotation of the differential output axes in the respective planetary transmission is reduced by a corresponding reduction in the planetary transmission.
    Advantageously, the planetary transmission comprises a planet carrier fitted with satellites and a hollow wheel, the planet carriers being connected to one of the output shafts of the drive installation and the hollow wheel being fixed to the panel. respective level. In this way, the speed of rotation of the differential output shafts is increased to a lower speed for the output axes of the drive installation.
    In addition, advantageously, the differential has two axis pinions and two balancing pinions, each differential pinion pinion being connected by one of the differential output axes and one of the planetary transmissions to the '' one of the output axes of the drive installation and the balancing pinions are mounted for rotation perpendicular to the axis of rotation of the differential housing inside this housing by meshing with the two axis pinions .
    In addition, advantageously, the electric machine is a synchronous machine with permanent magnet excitation having a number of poles between 12 and 24, because, in this way, the electric machine provides lower rotational speeds than those of the state of the art with a higher maximum torque than in the state of the art. According to the state of the art, an electric machine is used which, by comparison with the invention, provides a higher speed of rotation for a lower maximum torque.
    The torque of the electric machine is fixed so that the speed of rotation of the electric machine towards the driving wheels is increased by means of a single-stage transmission, for example with a reduction of the order of 4 to 6. Such electric machines have a large diameter rotor so as to have greater free space in the rotor. This rotor is advantageously used to arrange the differential transmission, at least in segments, with the planetary transmission, in a space-saving manner.
    Drawing
    The present invention will be described below with the aid of an example embodiment of a drive installation represented by an axial sectional view in the single appended figure.
    Description of the embodiment
    The drive installation 1 comprises an electric machine 2, a differential transmission 3 and two planetary two-stage transmissions 4. The rotor 5 of the electric machine 2 transmits the engine torque regularly to the two output axes 6 of the installation drive 1 to drive the two drive axes 7, coaxial, of the electric axis. The end of the drive shafts 7 respectively carries a wheel of the vehicle.
    The mechanical transmission chain between the electric machine 2 and the coaxial output axes 6 of the drive installation 1 comprises the differential 3 and the two planetary transmissions 4. The two planetary transmissions 4 have two identical planetary locations respectively. The electric machine 2 and the differential housing 3 are housed in the housing 10 of the drive installation 1 which has, for example, a cooling jacket 10.1 with cooling channels 9 traversed by a cooling fluid to cool the drive installation 1. The stator 14 of the electric machine 2 is applied by its outer periphery against the cooling jacket 10.1 of the drive housing 10.
    The differential 3 has a housing 11 and two output axes 12.
    According to the invention, the differential housing 11 is fixed to the rotor 5 of the electric machine 2 and each output axis 12 of the differential 3 is coupled to a planetary transmission 4 with one stage.
    The differential housing 11 has a fixing segment 15, for example, a flange segment which is fixed to a fixing segment 16 of the rotor 5, for example, a complementary flange segment. According to the exemplary embodiment, the flange segment 15 of the differential 11 is screwed to the complementary flange segment 16 of the rotor 5.
    The rotor 5 of the electric machine 2 surrounds a cavity 17 receiving the differential 3 so that the rotor 5 of the electric machine 2 and the housing 11 of the differential 3 are on a common axis of rotation 18 and are housed in two rotation bearings 19 common. The differential 3, according to this exemplary embodiment, is housed completely in the cavity 17, but it can also be housed there only partially.
    The electric machine is, for example, a synchronous machine excited by permanent magnets and its number of poles is in a range between 12 and 24. In this way, a rotor 5 is obtained whose cavity 17 is particularly large in the radial direction with respect to the axis of rotation 18. The torque developed by the electric machine is such that it suffices to multiply the speed of rotation by a single transmission stage in the respective planetary transmission 4, for example, with a gear ratio between 4 and 6.
    The differential 3 is, for example, installed in the axial direction relative to the axis of rotation 18, in the middle of the rotor 5 and / or on the drive unit 10. The rotation bearings 19 are each supported on a bearing panel 20 of the drive housing 10. The bearing panels 20 have the form of a cover closing the cooling jacket 10.1 of cylindrical shape of the drive housing at its front faces; these panels are therefore attached to the cooling jacket 10.1 of the drive housing 10 for example, by flanges. In addition, the bearing panels 20 each have a cavity 23 for receiving one of the planetary transmissions 4. The cavities 23 of the bearing panels 20 arrive in the cavity 17 of the rotor 5 of the electric machine 1 and are closed by the panels. bearing 24 to enclose the planetary transmissions in the cavities 23. Thus the planetary games of the planetary transmission 4 can rotate in an oil bath.
    The differential housing 11 comprises two bearing supports 25, the outer sides of which face the rotor 5 are each provided with a rotation bearing 19; their inner side is each provided with a differential output axis 12. The output axes 12 of the differential are respectively coupled to a sun wheel 26 of the respective planetary transmission 4.
    The two planetary transmissions 4 with one stage have a reduction ratio of between 4 and 6 with each time a planet carrier 28 provided with a satellite 27 and respectively an internal gear 29. The planet carrier 28 of the planetary transmission is connected or coupled respectively to one of the output axes 6 of the drive installation. The internal gear 29 of the planetary transmission 4 is fixed respectively to one of the bearing panels 20, for example, by a connection by form or by force, such as, for example a connection by pressing and crimping. We can also consider other types of connection such as, for example, rivets, screws, glue or welding. In addition, the internal gear 29 can also be produced in a single piece with the bearing panel 20.
    The differential 3 comprises two pinion gears 32 and two balancing pinions 33. Each of the pinion gears 32 of the differential 3 is connected by one of the differential output axes 12 and one of the planetary transmissions 4 to an output axis 6 of the drive installation 1. The balancing bevel gears 33 are rotatably mounted in the differential housing 11 perpendicular to the axis of rotation 18 of the differential housing 11. These pinions mesh with the two pinions of axis 32.
    NOMENCLATURE OF MAIN ELEMENTS
    Training facility
    Electric machine
    Differential
    Planetary gear / planetary transmission
    Rotor
    Output axis
    Training axis
    Cooling channels
    Drive housing
    10.1 Cooling jacket
    Differential housing
    Differential output axis
    Attachment segment
    Attachment segment
    Cavity
    Common axis of rotation
    Common rotation bearing
    Landing panel
    Bearing panel cavity
    Landing support
    Solar wheel
    Satellite
    Satellite carrier
    Hollow gear
    Axis pinion
    Balancing pinion
    权利要求:
    Claims (10)
    [1" id="c-fr-0001]
    1 °) Drive installation (1) for driving an electric axis comprising an electric machine (2) whose rotor (5) applies a motor torque to two output axes (6) of the drive installation (1) to drive two motor tax axes (7),
    - the transmission path between the electric machine (2) and the output axes (6) of the drive installation (1) comprising a differential (3) and at least one planetary transmission (4),
    - the electric machine (2) and the differential (3) being housed in the housing (10) of the drive installation (1), and
    - the differential (3) having a differential housing (11) and two differential output axes (12), installation characterized in that the differential housing (11) is fixed to the rotor (5) of the electric machine (2) and the one-stage planetary transmission (4) is coupled to each output axis (12) of the differential (3).
    [2" id="c-fr-0002]
    2 °) drive installation according to claim 1, characterized in that the differential housing (11) comprises a fixing segment (15), in particular a flange fixed to the fixing segment (16) of the rotor (5) in particular a complementary flange segment.
    [3" id="c-fr-0003]
    3 °) drive installation according to claim 1 and 2, characterized in that the rotor (5) of the electric machine (2) surrounds a cavity (17) at least partially housing the differential (3).
    [4" id="c-fr-0004]
    4 °) drive installation according to claim 3, characterized in that the rotor (5) of the electric machine (2) and the differential housing (11) have a common axis of rotation (18) and are mounted in two common rotation bearings (19), each carried by a bearing panel (20) of the drive housing (10).
    ίο
    [5" id="c-fr-0005]
    5 °) drive installation according to claim 4, characterized in that the differential housing (11) comprises two bearing supports (25) whose outer side is provided with a respective rotation bearing (19) and whose inner side is provided with one of the two respective differential output axes (12).
    [6" id="c-fr-0006]
    6 °) drive installation according to claim 4, characterized in that the bearing panels (20) each have a cavity (23) to receive one of the planetary transmissions (4), the cavities (23) of the panels bearing (20) projecting into the cavity (17) of the rotor (5) of the electric machine (2).
    [7" id="c-fr-0007]
    7 °) drive installation according to one of claims 1 to 6, characterized in that the output axes (12) of the differential (3) are each coupled to the planetary wheel (26) of the planetary transmission (4) respective.
    [8" id="c-fr-0008]
    8 °) drive installation according to one of claims 4 to 6, characterized in that the planetary transmission (4) comprises a satellite support (28) carrying a satellite (27) and an internal gear (29) ,
    - the satellite support (28) being connected to one of the output axes (6) of the drive installation (1) and the internal gear (29) being fixed to the respective bearing panel (20) .
    [9" id="c-fr-0009]
    9 °) drive installation according to one of claims 1 to 8, characterized in that the differential (3) comprises two pinion gears (32) and two bevel balance gears (33), each pinion axis (32) of the differential (3) being connected by one of the differential output axes (12) and one of the planetary transmissions (4) to one of the output axes (6) of the installation drive (1) and the balancing pinions (33) are rotatably mounted in the differential housing (11) perpendicular to the axis of rotation (18) of the differential housing (11) by meshing with the two pinions axis (32).
    [10" id="c-fr-0010]
    10 °) drive installation according to one of claims 1 to 9,
    5 characterized in that the electric machine (2) is a synchronous machine with permanent magnet excitation whose number of poles is between 12 and 24.
    类似技术:
    公开号 | 公开日 | 专利标题
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    FR2989538A1|2013-10-18|TENSION DEVICE FOR A MOTOR VEHICLE
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    BE1006826A5|1995-01-03|Locking differential.
    FR2859951A1|2005-03-25|Driving assembly for e.g. power lift truck, has alternating current asynchronous motor shifted laterally with respect to driving gear, where rotating axis of motor is situated vertically between pivoting bearing and rotating axis of gear
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    FR2634711A1|1990-02-02|Axle drive for rail vehicle wheel set
    EP1786086A2|2007-05-16|Assembly of an electric machine and a brake
    FR2811267A1|2002-01-11|Propulsion for hybrid vehicle has a epicycloidal gear where the concentric rotors of the two motors are linked on one side and the shaft of the IC engine on the other side
    FR2721083A1|1995-12-15|Eccentric reducer.
    同族专利:
    公开号 | 公开日
    DE102016220630A1|2018-04-26|
    CN107962943A|2018-04-27|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US3576143A|1969-09-05|1971-04-27|Sundstrand Corp|Constant speed drive and generator|
    JP3463366B2|1994-08-09|2003-11-05|アイシン・エィ・ダブリュ株式会社|Drive for electric vehicles|
    JP3622748B2|2002-11-14|2005-02-23|日産自動車株式会社|Hybrid transmission|
    DE102004037266A1|2004-07-31|2006-02-16|Linde Ag|Drive axle especially for land vehicles has electric motor and differential integrated into the electric motor rotor and two drive shafts with reduction drive gears|
    CN101521431A|2009-03-10|2009-09-02|江西江铃汽车集团实业有限公司|Motor with double output shaft sleeves and differential function|
    CN101707412B|2009-11-13|2012-05-09|北京科技大学|Driving motor with function of differential speed output|
    DE102013016441B4|2013-09-27|2018-02-01|Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr|Device for driving a vehicle|
    CN104675951B|2015-02-11|2017-02-01|吉林大学|Electric differential with double-row planetary gear torque directional distribution mechanism|
    CN104842781B|2015-06-17|2017-03-15|清华大学苏州汽车研究院（相城）|Motor integral electric bridge is put in a kind of distribution function with driving force|US10882389B2|2016-05-06|2021-01-05|Allison Transmission, Inc.|Axle assembly with electric motor|
    CN109130817B|2018-05-11|2020-04-14|福州市长乐区长胜信息技术有限公司|Rear wheel driving system for electric bus|
    CN109080722B|2018-05-11|2020-01-17|山东力聚特种装备股份有限公司|Wheeled four-wheel-drive walking platform for robot|
    USD927578S1|2018-09-27|2021-08-10|Allison Transmission, Inc.|Axle assembly|
    DE102019216013A1|2019-10-17|2021-04-22|Zf Friedrichshafen Ag|Electric drive for a vehicle|
    法律状态:
    2018-10-22| PLFP| Fee payment|Year of fee payment: 2 |
    2019-10-22| PLFP| Fee payment|Year of fee payment: 3 |
    2020-10-20| PLFP| Fee payment|Year of fee payment: 4 |
    2021-08-13| PLSC| Publication of the preliminary search report|Effective date: 20210813 |
    2021-10-21| PLFP| Fee payment|Year of fee payment: 5 |
    优先权:
    申请号 | 申请日 | 专利标题
    DE102016220630.3|2016-10-20|
    DE102016220630.3A|DE102016220630A1|2016-10-20|2016-10-20|Drive device for driving an electrical axis|
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