• 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 the powertrain comprises first (10) and second (11) accessories housed in the housing (17) of the geared motor system (4), and which are respectively driven independently of one another by the first (2) and second (3) electric motors. The invention finds its application in the field of the automotive industry.
    公开号:FR3043363A1
    申请号:FR1560707
    申请日:2015-11-09
    公开日:2017-05-12
    发明作者:Huy Eric Deland；Aurelien Lecocq
    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. On the other hand, the accessories can not be driven independently of each other. In addition, the engines and accessories are not protected, when the vehicle moves, against the natural elements (water, grit ...).
    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 housed in the housing of the geared motor system, and which are respectively driven independently of one another by the first and second electric motors.
    In another feature, the motor shaft of at least one of the electric motors comprises a coupling device adapted to couple one of the accessories to the motor shaft of the corresponding electric motor.
    According to another feature, each coupling device is a clutch device or a clutch device.
    According to another feature, the shafts of the first and second accessories are respectively driven by the motor shafts of the first and second electric motors respectively via two belts or transmission chains.
    According to another feature, the first and second electric motors and the two belts or transmission chains are housed 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 respectively connected to two accessories housed 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 also comprises 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 4c is intended to be driven by at least one of the input shafts 4a, 4b of the gear assembly, the latter being able to drive the output shaft 5 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 4a, 4b 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 housed in the housing 17 of the geared motor system 4 and are respectively driven by the motor shafts 6, 7 of the first and second electric motors 2, 3. The two accessories 10, 11 are for example and indifferently an alternator and an air conditioning compressor.
    The shaft 12 of the first accessory 10 is mechanically connected to the shaft of the first electric motor 2 via a belt, or preferably a transmission chain 16a with oil bath. The shaft 13 of the second accessory 11 is mechanically connected to the shaft of the second electric motor 3, also via a belt or preferably a transmission chain 16b with an oil bath. In this way, the accessories 10, 11 are driven independently of one another, the two electric motors 2, 3 being controlled via a computer of the vehicle 18, independently of one another. The two belts or transmission chains 16a, 16b are housed in the housing 17 of the geared motor system 4 and the two electric motors 2, 3 are also housed in said housing 17.
    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 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 ensures 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. Nevertheless, at least one of the electric motors 2, 3 remains powered by a vehicle battery 18 to rotate its motor shaft 6, 7 and therefore the drive of the 12, 13 of at least one accessory 10, 11. Preferably, the first electric motor 2 remains powered by the battery to rotate its drive shaft 6 and thus drive the shaft 12 of the first accessory 10 , that is to say the alternator, while the second electric motor 3 is fed intermittently, so that the latter does not rotate the second accessory 11, that is to say the compressor of air conditioning, which 'According to the needs of the air conditioning of the vehicle 18.
    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. In the same way, when the computer of the vehicle 18 controls the supply of the second accessory 11, the corresponding coupling device 9 maintains the coupling of the drive shaft 7 of the second electric motor 3 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, rotates the motor shaft 7 of the second electric motor 3.
    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.
    At least one of the motor shafts 6, 7 of the first and second electric motors 2, 3 is coupled to the geared motor system 4 via the corresponding coupling device 8, 9, so that at least one of the electric motors 2, 3 powered by the battery rotates the output shaft 5 of the geared motor system 4.
    Preferably, it is the first electric motor 2 which remains coupled to the geared motor system 4 via the corresponding coupling device 8 to drive the first accessory 10. The second electric motor 3 is uncoupled from the geared motor system 4 , so that the second electric motor 3 does not participate in the drive of the output shaft 5 of the geared motor system 4. The second electric motor 3 can nevertheless be powered by the battery, so that the drive shaft 7 of the second electric motor 3 rotates the shaft 13 of the second accessory 11.
    The rotation of the drive shaft 7 is controlled, for example by the vehicle computer 18, rotation frequency just needed, that is to say that the speed of rotation reached by the drive shaft 7 of the second electric motor 3 is just sufficient to allow power supply of the second accessory 11. The speed of rotation of the shaft 12 of the first accessory 10 is in turn dependent on the speed of rotation of the rear wheel train 22 of the vehicle 18, insofar as the first electric motor 2 is coupled to the geared motor system 4.
    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 speeds rotation of the shafts 12, 13 of the accessories 10, 11 are therefore dependent on the speed of rotation of the rear wheel set 22 of the vehicle 18.
    Preferably, to allow intermittent operation of the second accessory 11, the drive shaft 7 of the second electric motor 3 comprises a coupling device 15, for example a clutch device or a clutch device. When the operation of the second accessory 11, that is to say the air conditioning compressor, is not necessary, the vehicle computer 18 controls the coupling device to uncouple the accessory 11 from the drive shaft 7 of the second electric motor 3. Thus, the second electric motor 3, which is powered by the battery and participates in driving the output shaft 5 of the geared motor system 4, does not cause the shaft 13 of the second accessory 11.
    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 respectively connected to the first 2 and second 3 electric motors, it is possible for the manufacturer to size the two electric motors 2, 3 independently of one another according to the choice of accessories 10, 11, which can also operate at different rotational frequencies. The advantage of the invention also lies in allowing the independent control of the two accessories 10,11.
    Finally, the fact that all the elements of the electric propulsion unit 1 are included in a housing 17 can accommodate this group under the vehicle 18 without worrying about the problem of protection against natural elements such as gravelling or the water.
    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 housed in the housing (17) of the geared motor system (4), and which are respectively driven independently of one another by the first (2) and second (3) electric motors.
    [2" id="c-fr-0002]
    2. Power train according to claim 1, characterized in that the motor shaft (6, 7) of at least one of the electric motors (2, 3) comprises a coupling device (15) capable of coupling one of the accessories. (10, 11) to the motor shaft (6, 7) of the corresponding electric motor (2, 3).
    [3" id="c-fr-0003]
    3. Powertrain according to claim 2, characterized in that each coupling device (8, 9, 15) is a clutch device or a clutch device.
    [4" id="c-fr-0004]
    4. Power train according to any one of claims 1 to 3, characterized in that the shafts (12, 13) of the first (10) and second (11) accessories are respectively driven by the drive shafts (6, 7) of the first (2) and second (3) electric motors respectively via two belts or transmission chains (16a, 16b).
    [5" id="c-fr-0005]
    5. Power train according to claim 4, characterized in that the first (2) and second (3) electric motors and the two belts or transmission chains (16a, 16b) are housed 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
    FR3043363B1|2018-11-30|
    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|
    US20120221197A1|2011-02-28|2012-08-30|Aisin Aw Co., Ltd.|Electric vehicle drive system|
    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|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|
    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
    FR1560707A|FR3043363B1|2015-11-09|2015-11-09|POWER UNIT OF A VEHICLE|
    FR1560707|2015-11-09|FR1560707A| FR3043363B1|2015-11-09|2015-11-09|POWER UNIT OF A VEHICLE|
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