• 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 a powertrain of a vehicle. The invention is characterized in that first (10) and second (11) accessories are integrated in the housing (17) of the geared motor system and connected in series to one another by means of a mechanical transmission (14) allowing different speeds of rotation of the two shafts (12, 13) of the two accessories (10, 11), which are driven by the first electric motor (2). The invention finds its application in the field of the automotive industry.
    公开号:FR3043364A1
    申请号:FR1560708
    申请日:2015-11-09
    公开日:2017-05-12
    发明作者:Huy Eric Deland；Valerie Brulhard
    申请人:Peugeot Citroen Automobiles SA；
    IPC主号:
    专利说明:

    The invention relates to a powertrain of a vehicle, in particular a motor vehicle.
    The invention applies in particular, but not limited to, a hybrid vehicle comprising on the one hand a propulsion engine and on the other hand two propulsion electric motors and a geared motor system.
    It is well known that such a vehicle includes in front several accessories, such as an alternator or an air conditioning compressor. It is also known to connect these accessories to the engine of the motor vehicle, which then drives these accessories using a belt connected by a pulley to the crankshaft of said engine.
    However, the drive of these accessories has the consequence on the one hand the increase in the load of the engine and therefore its consumption, and on the other hand the decrease in efficiency of said engine. In addition, the increase in the load of the heat engine also induces an increase in the production and release of carbon dioxide by the latter. Finally, on a hybrid vehicle, during an exclusively electric operation phase during which the engine is stopped, some accessories, such as the air conditioning compressor, are powered by the vehicle battery, causing a very discharged the latter, which will then have to be recharged by the engine.
    It is also known in particular from US 7690451 a hybrid vehicle having a hybrid propulsion unit comprising a heat engine and an electric motor, and a system for supplying the vehicle accessories. In particular, this system comprises an electric motor for driving accessories mounted on a facade.
    However, this hybrid propulsion system has the disadvantage of being cumbersome because of the presence of the accessory front, and that the drive accessories can be achieved by an additional electric motor.
    The present invention aims to overcome the above disadvantages of the prior art.
    To achieve this goal, the powertrain according to the invention comprises first and second electric motors, a geared motor system comprising an output shaft, the motor shafts of the first and second electric motors being mechanically connected to the output shaft. of the geared motor system via respectively two coupling devices, and further comprising first and second accessories integrated in the housing of the geared motor system and serially connected to each other by means of a mechanical transmission device allowing different speeds of rotation of the two shafts of the two accessories, which are driven by the first electric motor.
    In another feature, the mechanical transmission device is an epicyclic gear train.
    According to another feature, the shaft of the second accessory is mechanically connected to the mechanical transmission system via a coupling device.
    According to another feature, each coupling device is a clutch device or a clutch device.
    According to another feature, the first accessory shaft is driven by the drive shaft of the first electric motor via a belt or a transmission chain, which is housed with the first electric motor in the housing of the geared motor system.
    In another feature, the first and second accessories are indifferently an alternator and an air conditioning compressor.
    The invention also relates to a motor vehicle, in particular of the hybrid type, comprising a powertrain as defined above.
    In another feature, the vehicle comprises a front wheel train, a rear wheel train, a heat engine at the front of the vehicle to drive the front wheels, the electric motors and the geared motor system being rear of the vehicle to drive the rear wheel train.
    The invention will be better understood, and other objects, features, details and advantages thereof will appear more clearly in the explanatory description which follows with reference to the accompanying drawings given solely by way of example illustrating a embodiment of the invention and in which: - Figure 1 shows a schematic top view of a hybrid vehicle comprising a powertrain according to the invention; - Figure 2 shows a schematic view of two electric motors, one of which is connected to two accessories connected in series to one another and integrated in the housing of a geared motor system, according to the invention.
    The invention is described below with reference to FIGS. 1 and 2, applied to a motor vehicle, in particular of the hybrid type.
    The motor vehicle 18 shown in Figure 1 is a hybrid type vehicle. The vehicle comprises, at the front, a propulsion engine 19, connected to a gearbox 20 and intended to drive the front wheelset 21 of the vehicle 18. The front and rear terms of the vehicle 18 are defined with respect to the direction of travel. moving of the vehicle adopting its cruising speed.
    The vehicle 18 comprises at the rear an electric propulsion unit 1 for driving the rear wheel set 22 of the vehicle 18.
    The electric propulsion unit 1 also shown in Figure 2 comprises two electric motors 2, 3, hereinafter named first 2 and second 3 electric motors. The electric propulsion unit 1 also comprises a geared motor system 4 comprising two input shafts 4a, 4b, a gear assembly 4c providing the reducing function of the geared motor system 4 and a differential 4d comprising an output shaft 5 intended to drive the motor. rear wheel train 22. The gear assembly is intended to be driven by at least one of the input shafts of the gear assembly, the latter being able to drive the output shaft 5 of the geared motor system 4 The electric motors 2, 3 are in the housing 17 of the geared motor system 4.
    The motor shafts 6, 7 of the first and second electric motors 2, 3 are mechanically connected respectively to the two input shafts of the geared motor system 4 via respectively two coupling devices 8, 9 included in the casing 17 of the geared motor system. 4, so that the rotation of at least one of the motor shafts 6, 7 of the first and second electric motors 2, 3 rotates the output shaft 5 of the geared motor system 4.
    Each coupling device 8, 9, for example and without limitation a clutch device or a clutch device, allows to couple or uncouple any of the two electric motors 2, 3 of the system. geared motor 4, depending on the propulsion requirements. The different operating phases of the electric propulsion unit 1 will be described later.
    The electric propulsion unit 1 further comprises two accessories, hereinafter named first 10 and second 11 accessories. These accessories 10, 11 are integrated in the housing 17 of the geared motor system 4 and are driven by the motor shaft 6 of the first motor 2. The two accessories 10, 11, for example and indifferently an alternator and an air conditioning compressor, are mounted in series so that the shaft 13 of the second accessory 11 is mechanically connected to one end of the shaft 12 of the first accessory 10 via a mechanical transmission system 14 included in the housing 17 of the geared motor system 4. In addition, the 12 of the first accessory shaft is connected to the mechanical transmission system 14 via a coupling device 15 included in the housing 17 of the geared motor system 4.
    The other end of the shaft 12 of the first motor 10 is in turn mechanically connected to the drive shaft 6 of the first electric motor 2 via a belt or a transmission chain 16 housed with the first electric motor 2 in the casing 17 of the geared motor system 4. Thus the shaft 12 of the first accessory 10, which is adapted to be driven by the drive shaft 6 of the first motor 2, is adapted to drive the shaft 13 of the second accessory.
    Preferably, the first accessory 10 is an alternator and the second accessory 11 is an air conditioning compressor, and it is this configuration which will be described below.
    The coupling device 15, for example a clutch device or interconnection, connecting the shafts 12, 13 of the first and second accessories 10, 11 allows the need to uncouple the second accessory 11 of the first electric motor 2. The transmission system 14, for example an epicyclic gear train, connecting the shafts 12, 13 of the first and second accessories 10, 11 allows the mounting in the electric propulsion unit 1 of two accessories 10, 11, the shafts 12, 13 of which do not necessarily have the same speed of rotation.
    The different operating phases of the electric propulsion unit 1 will now be described. Three different operating phases can be distinguished: a pure thermal phase, a low-speed electrical or hybrid phase, and a high-speed electrical or hybrid phase.
    During the so-called pure thermal operation phase, the heat engine 19 provides only the propulsion of the vehicle 18. The two coupling devices 8, 9 are therefore in a configuration such that the motor shafts 6, 7 of the two electric motors 2, 3 are uncoupled from the geared motor system 4. The second electric motor 3 is preferably at a standstill, while the first electric motor 2 remains powered by a vehicle battery 18 to rotate its motor shaft 6 and therefore driving at least the shaft 12 of the first accessory 10.
    Alternatively, to allow continuous drive at least the shaft 12 of the first accessory 10 by the drive shaft 6 of the first electric motor 2, the coupling device 8 maintains the coupling of the shaft motor 6 of the first electric motor 2 with the geared motor system 4, so that the output shaft 5 of the geared motor system 4, driven in rotation by the rear wheel train 22, drives in rotation the drive shaft 6 of the first electric motor 2.
    During the so-called electric or hybrid low speed operation phase, the electric propulsion unit 1 ensures at least a portion of the vehicle's propulsion 18 by driving the rear wheel train 22. The propulsion can be purely electric in which case the engine 19 is stopped, or hybrid, in which case the engine 19 also participates in the propulsion of the vehicle by driving the front wheelset 21.
    The drive shaft 7 of the second electric motor 3 is coupled to the geared motor system 4 via the corresponding coupling device 9, so that the second electric motor 3 powered by the battery rotates the output shaft 5 of the geared motor system 4.
    The first electric motor 2 is uncoupled from the geared motor system 4, so that the first electric motor 2 does not participate in the drive of the output shaft 5 of the geared motor system 4. The first electric motor 2 is nevertheless powered by the battery, so the drive shaft 6 of the first electric motor 2 rotates at least the shaft 12 of the first attachment 10, and if necessary the shaft 11 of the second attachment 13 if the latter is coupled to the first accessory 10 via the corresponding coupling device 15. The rotation of the driving shaft 6 is controlled, for example by a vehicle computer 18, in rotation frequency to just necessary, that is to say that the speed of rotation reached by the drive shaft 6 of the first motor electrical 2 is just sufficient to allow the supply of energy at least the first accessory 10.
    During the so-called electric or hybrid operation phase at high speed, the electric propulsion unit 1 ensures at least part of the propulsion of the vehicle 18 by driving the rear wheel train 22. The propulsion can be purely electric in which case the engine 19 is stopped, or hybrid, in which case the engine 19 also participates in the propulsion of the vehicle by driving the front wheelset 21.
    However, in this phase of operation, a greater torque must be provided at least by the electric propulsion unit 1 to maintain the cruising speed of the vehicle 18.
    To do this, the two electric motors 2, 3 are coupled to the geared motor system 4, and both participate in the drive of the output shaft 5 of the geared motor system 4. In this phase of operation, the speed at least the rotation of the shaft 12 of the first accessory 10 is therefore dependent on the speed of rotation of the rear wheel train 22 of the vehicle 18.
    Thus, the electric propulsion unit 1 according to the invention, incorporating the accessories 10, 11 as the alternator and the air conditioning compressor, allows to remove the accessory facade used in known systems. This reduces the load of the engine 19, which no longer needs to supply the accessories 10, 11, and further improve the performance thereof.
    The accessories 10, 11 are also all connected to the first electric motor 2, it is possible for the manufacturer to size the two electric motors 2, 3 independently of one another. Finally, the integration of a mechanical transmission system 14 between the two accessories 10, 11 connected in series also allows the manufacturer to choose accessories operating at different rotation frequencies.
    The configuration as described is not limited to the embodiment described above and shown in the figures. It has been given only as a non-limiting example. Multiple modifications can be made without departing from the scope of the invention. In particular, the electric propulsion unit may comprise other accessories mounted in series, with or without a coupling device 15 and mechanical transmission system 14 of the epicyclic gear type, all these accessories being driven by the drive shaft 6 of the first electric motor 2.
    权利要求:
    Claims (8)
    [1" id="c-fr-0001]
    1. Power train of a vehicle, in particular an automobile, comprising first (2) and second (3) electric motors, a geared motor system (4) comprising an output shaft (5), driving shafts (6, 7) of first (2) and second (3) electric motors being mechanically connected to the output shaft (5) of the geared motor system (4) via respectively two coupling devices (8, 9), and further comprising first (10) ) and second (11) accessories integrated in the housing (17) of the geared motor system and connected in series to each other via a mechanical transmission device (14) allowing different speeds of rotation of the two shafts (12, 13) of the two accessories (10, 11) which are driven by the first electric motor (2).
    [2" id="c-fr-0002]
    2. Power train according to claim 1, characterized in that the mechanical transmission device (14) is an epicyclic gear train.
    [3" id="c-fr-0003]
    3. Power train according to claim 1 or 2, characterized in that the shaft (13) of the second accessory (11) is mechanically connected to the mechanical transmission system (14) via a coupling device (15).
    [4" id="c-fr-0004]
    4. Powertrain according to claim 3, characterized in that each coupling device (8, 9, 15) is a clutch device or a clutch device.
    [5" id="c-fr-0005]
    5. Power train according to any one of claims 1 to 4, characterized in that the shaft (12) of the first accessory (10) is driven by the drive shaft (6) of the first electric motor (2) via a belt or a transmission chain (16), which is housed with the first electric motor (2) in the housing (17) of the geared motor system (4).
    [6" id="c-fr-0006]
    6. Power train according to any one of claims 1 to 5, characterized in that the first (10) and second (11) accessories are indifferently an alternator and an air conditioning compressor.
    [7" id="c-fr-0007]
    7. Motor vehicle (18), in particular hybrid type, comprising a powertrain according to any one of claims 1 to 6.
    [8" id="c-fr-0008]
    8. Motor vehicle (18) according to claim 7, characterized in that it comprises a front wheel set (21), a rear wheel set (22), a heat engine (19) at the front of the vehicle for driving the front wheelset (21), the electric motors (2, 3) and the geared motor system (4) being at the rear of the vehicle (18) for driving the rear wheel train (22).
    类似技术:
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    同族专利:
    公开号 | 公开日
    WO2017081377A1|2017-05-18|
    FR3043364B1|2017-12-22|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    EP2272701A2|2009-07-03|2011-01-12|Schaeffler Technologies AG & Co. KG|Drive device for an electric vehicle|
    DE102011004191A1|2011-02-16|2012-08-16|Schaeffler Technologies Gmbh & Co. Kg|Electromechanical vehicle drive device, particularly for use in electric vehicles such as passenger car for individual transport, has electric motor with power output, another electric motor with another power output and transmission device|
    DE102012204717A1|2012-03-23|2013-09-26|Zf Friedrichshafen Ag|Electromotive drive device for motor vehicle, has spur gear with a gear set having gear ratio, another gear set having another gear ratio and switching device which is controlled in one switching position or in another switching position|
    WO2014029651A1|2012-08-24|2014-02-27|Avl List Gmbh|Drive train for a vehicle|
    US9156348B1|2014-07-17|2015-10-13|GM Global Technology Operations LLC|Two axis electric drive|FR3084620A1|2018-08-03|2020-02-07|Valeo Embrayages|PROPULSION SYSTEM FOR ELECTRIC VEHICLE|
    WO2020030227A1|2018-08-10|2020-02-13|Schaeffler Technologies AG & Co. KG|Electromechanical drive assembly for a motor vehicle|
    WO2020030231A1|2018-08-10|2020-02-13|Schaeffler Technologies AG & Co. KG|Electromechanical drive assembly for a motor vehicle|
    WO2020030229A1|2018-08-10|2020-02-13|Schaeffler Technologies AG & Co. KG|Electromechanical drive assembly for a motor vehicle|
    WO2020030212A1|2018-08-10|2020-02-13|Schaeffler Technologies AG & Co. KG|Electromechanical drive arrangement for a motor vehicle|
    FR3067972B1|2017-06-23|2020-01-03|Lohr Industrie|CENTRAL MECHANICS FOR MOTORIZED VEHICLE AXLE|
    DE102017216114A1|2017-09-12|2019-03-14|Bayerische Motoren Werke Aktiengesellschaft|Automotive drive system|
    法律状态:
    2016-10-20| PLFP| Fee payment|Year of fee payment: 2 |
    2017-05-12| PLSC| Publication of the preliminary search report|Effective date: 20170512 |
    2017-10-20| PLFP| Fee payment|Year of fee payment: 3 |
    2018-06-29| CA| Change of address|Effective date: 20180312 |
    2018-06-29| CD| Change of name or company name|Owner name: PEUGEOT CITROEN AUTOMOBILES SA, FR Effective date: 20180312 |
    2018-10-24| PLFP| Fee payment|Year of fee payment: 4 |
    2019-10-22| PLFP| Fee payment|Year of fee payment: 5 |
    2020-10-21| PLFP| Fee payment|Year of fee payment: 6 |
    2021-10-20| PLFP| Fee payment|Year of fee payment: 7 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1560708A|FR3043364B1|2015-11-09|2015-11-09|POWER UNIT OF A VEHICLE|FR1560708A| FR3043364B1|2015-11-09|2015-11-09|POWER UNIT OF A VEHICLE|
    PCT/FR2016/052618| WO2017081377A1|2015-11-09|2016-10-10|Power train of a vehicle|
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