• 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 drive train (1) for a vehicle, in particular an electric vehicle with a rank extender, comprising a first electric machine (2), which comprises a first, second and third planetary gear element (5a, 5b, 5c ), with at least one drive shaft (8) of the vehicle is drivingly connected, with a second electric machine (3) which is connected via the planetary gear with the first electric machine (2), and with an internal combustion engine (4), which with the first electric machine (2) is connected. A compact drive train with a high degree of variability is achieved in that a switchable first clutch (9) is arranged between the internal combustion engine (4) and the second electric machine (3).
    公开号:AT513352A1
    申请号:T50340/2012
    申请日:2012-08-24
    公开日:2014-03-15
    发明作者:Jozef Karel Irma Vermeulen
    申请人:Avl List Gmbh；
    IPC主号:
    专利说明:

    1 56471
    The invention relates to a drive train for a vehicle, in particular an electric vehicle with a rank extender, with a first electric machine which is drivingly connected to at least one drive shaft of the vehicle via a planetary gear, which has a first, second and third planetary gear element, with a second electric Machine, which is connected via the planetary gear with the first electric machine, and with an internal combustion engine, which is connected to the first electric machine.
    The US 5,991,683 A discloses a drive train for a hybrid vehicle having a first electric machine and a second electric machine, and an internal combustion engine, wherein the first electric machine is connected to a sun gear of a planetary gear and the second electric machine with the planet carrier of the planetary gear is rigidly drive-connected , The second electric machine is further rigidly connected in drive with an internal combustion engine. The ring gear of the planet carrier acts on drive shafts of the vehicle. Coupling elements between the machines are not provided. However, this significantly limits the scope of the drive train. In particular, a decoupling of the second electric machine from the internal combustion engine or from the planetary gear is not possible.
    Further similar drive trains are known from the publications EP 2 218 603 A1, US 2009 / 250,278 A, US 2010 / 006,357 A, US Pat. No. 7,204,222 B, US Pat. No. 6,991,054 B, US Pat. No. 6,067,801 A, US Pat. No. 6,161,640 A and US Pat. No. 6,278,195 A.
    It is the object of the invention to propose a drive train which is suitable for use in hybrid vehicles with range extender, wherein a temporary direct drive on the range extender formed by an internal combustion engine should be possible. The range extender should also be able to be used in the short term to support the electric drive. The drive train should take up as little space as possible.
    According to the invention this is achieved in that between the internal combustion engine and the second electric machine, a switchable first clutch is arranged, preferably between the second electric machine and the planetary gear, a switchable second clutch is arranged. 2
    The internal combustion engine can thus be decoupled from the second electric machine, whereby the second electric machine can be operated independently of the internal combustion engine, for example to support recuperation work, or to drive auxiliary equipment, such as an air conditioning compressor.
    Because the second electric machine can be decoupled from the planetary gear via the second clutch, it is also possible to recharge the electric accumulator independently of the remaining drive train via the internal combustion engine and the second electric machine. Nevertheless, by closing the first and the second clutch, a drive connection to the rest of the drive train can be established, whereby both the internal combustion engine, and the second electric machine can be used to support the drive power.
    The first electric machine may be drive-connected to a first planetary gear element preferably formed by a ring gear. A preferably formed by a planet carrier second planetary gear element acts on the drive shaft of the vehicle.
    In a first embodiment of the invention it is provided that the second electric machine is connected to the second planetary gear element. The second electric machine and the internal combustion engine can be used directly to support the drive of the drive shaft. This allows switching without train interruption, since the second electric machine can provide the torque for the drive at short notice during the switching process.
    In a second embodiment of the invention it is provided that the second electric machine is connected to the first planetary gear element. In this case, the second electric machine and the internal combustion engine act on the same planetary gear element as the first electric machine. The drive of the vehicle is thus performed by the internal combustion engine and the second electric machine via the translation of the planetary gear. In this way, a particularly high torque is available on the drive shaft. Alternatively, this also makes it possible to make the drive train more compact and easier, since the drive torque is provided by both electric machines.
    At least two different gear stages can be realized in a simple manner, when the first planetary gear element and the second planetary gear element are rigidly rotatably connected to each other via a switchable third clutch, wherein preferably preferably formed by a sun gear third Pianetengetriebeelement is firmly preserved by a braking device. By selectively activating the third clutch and the brake element, for example, gear ratios of 1: 1 and 1.5: 1 can be made possible.
    In order to enable air conditioning of the interior of the vehicle even when the vehicle is stationary, it is particularly advantageous if an air-conditioning compressor, preferably via a transmission stage, is drive-connected to the second electric machine.
    The invention will be explained in more detail below with reference to FIGS.
    It show schematically
    1 shows a drive train according to the invention in a first embodiment and
    2 shows a drive train according to the invention in a second drive va ri nte.
    The figures show a drive train 1 for a hybrid vehicle with a first electric machine 2, a second electric machine 3 and an internal combustion engine 4, which, among other things, performs the function of a so-called range extender.
    The first electric machine 2, which in the present example forms the primary drive source, acts via its drive shaft 2 a on a first planetary gear element 5 a of a planetary structure 5 formed by a ring gear in the present exemplary embodiments. An example formed by a planet carrier second planetary gear element 5b is connected via a 4th
    Gear stage 6 and a differential 7 connected to drive shafts 8 of the vehicle.
    The drive shaft 3a of the second electric machine 3 can be connected via a schaitbare first clutch 9 with the shaft 4a of the internal combustion engine 4. On the side facing away from the internal combustion engine 4, the shaft 3b of the second electric machine 3 via a second clutch 10 with the planetary gear 5 is connectable.
    By means of a third clutch 11, the first planetary gear element 5a and the second planetary gear element 5b of the planet carrier can be rigidly connected to each other. The third planetary gear element 5c formed, for example, by the sun gear can be held in place by a brake device 12.
    The drive shaft 3b of the second electric machine 3 is connected via a gear 13 with an air conditioning compressor 14.
    In the exemplary embodiment illustrated in FIG. 1, the drive shaft 3b of the second electric machine 3 can be connected via the second clutch 10 to the second planetary gear element 5b, which acts directly on the drive shafts 8 via the gear stage 6 having a rigid gear ratio and the differential 7. In this way, a drive assist by the second electric machine 3 and / or the internal combustion engine 4 can be realized at high vehicle speeds.
    Fig. 2, however, shows an embodiment in which the drive shaft 3b of the second electric machine 3 via the second clutch 10 with the first planetary gear element 5a of the planetary gear 5 is drive-connected. The second electric machine 3 and / or the internal combustion engine 4 thus act like the first electric machine 2 on the input of the planetary gear 5, whereby the torque acting on the drive shaft 8 of the supporting second electric machine 3 and the internal combustion engine 4 by the switching position of the third clutch 11 and the braking device 12 depends dependent current gear ratio of the planetary gear 5.
    The transmission ratio of the planetary gear 5 can be changed by alternately activating or deactivating the third clutch 11 and the braking device 12 5, wherein in the embodiment, when activated third clutch il and deactivated braking device 12, a transmission ratio of 1: 1 (direct drive), at deactivation the third clutch 11 and activation of the braking device 12, a transmission ratio of 1.5: 1 between the first planetary gear element 5a and the second planetary gear element 5b sets.
    In the exemplary embodiment, the maximum torques of the first electric machine 2, the second electric machine 3 and the internal combustion engine 4 behave in a ratio of 4: 2: 1.
    The first clutch 9 is closed to start the internal combustion engine 4 and to charge the electrical energy storage when the internal combustion engine 4 is activated. The first clutch 9 may possibly also be closed when torque assistance for acceleration by the internal combustion engine 4 is desired or necessary.
    The second clutch 10 is closed when the second electric machine 3 is activated to assist acceleration or recuperation. The second clutch 10 is opened when the internal combustion engine 4 is used as a range extender only for charging the electrical energy storage. The rotor of the second electric machine 3 can form the flywheel for the internal combustion engine 4.
    The internal combustion engine 4 forming the range extender is thus part of the drive train 1 and, together with the two electrical machines 2, 3, forms a compact system which requires only damping and insulation. The range extender can be used both for charging the electric battery storage, as well as for applying an additional torque, for example during a switching operation of the prime mover.
    Both electric machines 2, 3 can be used for recuperation. Each component of the drive train 1 can be independently activated or deactivated. 6
    The drive system 1 described thus represents a very compact arrangement for a hybrid vehicle with range extender and opens up a variety of different applications.
    权利要求:
    Claims (9)
    [1]
    7. PATENT CLAIMS 1. Drive train (1) for a vehicle, in particular an electric vehicle with a rank extender, with a first electric machine (2), which via a planetary gear (5), which a first, second and third planetary gear element (5a, 5bf 5c) has, with at least one drive shaft (8) of the vehicle is drivingly connected to a second electric machine (3) which is connected via the planetary gear with the first electric machine (2), and with an internal combustion engine (4), which with the first electrical machine (2) is connected, characterized in that between the internal combustion engine (4) and the second electric machine (3) a switchable first clutch (9) is arranged.
    [2]
    2. Drive train (1) according to claim l, characterized in that between the second electric machine (3) and the planetary gear (5) a switchable second clutch (10) is arranged.
    [3]
    3. Drive train (1) according to claim 1 or 2, characterized in that the first electric machine (2) is connected to a preferably formed by a Hohirad first Pianetengetriebeelement (5 a).
    [4]
    4. Drive train (1) according to one of claims 1 to 3, characterized in that a preferably formed by a planet carrier second planetary gear element (5b) with the drive shaft (8) is connectable.
    [5]
    5. Drive train (1) according to one of claims 1 to 4, characterized in that the second electric machine (3) is connectable to the second planetary gear element.
    [6]
    6. Drive train (1) according to one of claims 1 to 4, characterized in that the second electric machine (3) with the first planetary gear element (5a) is connectable.
    [7]
    7. Drive train (1) according to one of claims 1 to 6, characterized in that the first planetary gear element (5a) and the second planetary gear element 8 (5b) via a switchable third clutch (11) are rigidly drehverbindbar together.
    [8]
    8. Drive train (1) according to one of claims 1 to 7, characterized in that the preferably formed by a sun gear third planetary gear element (5c) by a braking device (12) is firmly held.
    [9]
    9. Drive train (1) according to one of claims 1 to 8, characterized in that at least one auxiliary unit, preferably an air conditioning compressor (14), particularly preferably via a translation stage, is drive-connected to the second electric machine (3). 2012 08 24 Fu / Ec
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    法律状态:
    2018-04-15| MM01| Lapse because of not paying annual fees|Effective date: 20170824 |
    优先权:
    申请号 | 申请日 | 专利标题
    ATA50340/2012A|AT513352B1|2012-08-24|2012-08-24|Powertrain for a vehicle|ATA50340/2012A| AT513352B1|2012-08-24|2012-08-24|Powertrain for a vehicle|
    CN201380049053.6A| CN104661848A|2012-08-24|2013-08-12|Drive train for a vehicle|
    PCT/EP2013/066812| WO2014029651A1|2012-08-24|2013-08-12|Drive train for a vehicle|
    US14/423,593| US20150240917A1|2012-08-24|2013-08-12|Drive train for a vehicle|
    JP2015527854A| JP2015527246A|2012-08-24|2013-08-12|Vehicle drive train|
    EP13750680.4A| EP2888124A1|2012-08-24|2013-08-12|Drive train for a vehicle|
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