Drive device with a connection for an auxiliary unit

Abstract

Drive device (10) for a vehicle, comprising a first drive (12) which provides a torque and is connected to an output element (26) in a torque-transmittable manner via a first clutch (24), a second drive (16) which provides a torque and is connected to the output element (26) in a torque-transmittable manner via a second clutch (32), wherein the torque provided by the first and second drives (12, 16) causes the vehicle to move, a connection (36) which is arranged between one of the drives and one of the clutches for a torque-transmitting connection between an auxiliary unit (34) and one of the drives (12, 16).

Description

[0001] The invention relates to a drive device according to claim 1.

[0002] DE 10 2019 127 925 A1 describes a drive device comprising an electric motor connected to an output via a clutch. An auxiliary unit is connected to the electric motor via another clutch. Another drive device of this type is disclosed in FR 3 043 363 A1.

[0003] Further relevant drive devices are known from DE 101 60 466 C1, DE 10 2019 117 758 A1 and DE 10 2019 120 145 A1.

[0004] The objective of the present invention is to make the drive system more cost-effective and space-saving. Furthermore, the auxiliary unit should operate more efficiently and with less energy consumption.

[0005] At least one of these objects is achieved by a drive device having the features of claim 1. This allows the auxiliary unit to be operated more efficiently and with greater energy savings. The drive configurations of the drive device can be expanded. For example, a serial or parallel hybrid drive of the vehicle may be possible.

[0006] The drive device can be arranged in a vehicle, preferably a motor vehicle. The drive device can have the auxiliary unit.

[0007] The first drive and / or second drive can directly or indirectly provide torque for propulsion of the vehicle. The first and second drives can be arranged coaxially.

[0008] The auxiliary unit can be operated via the first and / or second drive while the first and / or second drive provides drive power to propel the vehicle. The auxiliary unit can also be operated via the first drive while the vehicle is stationary and the transmission of the drive power from the first drive to the output element is interrupted by the first clutch. The auxiliary unit can also be operated via the second drive while the vehicle is stationary and the transmission of the drive power from the second drive to the output element is interrupted by the second clutch.

[0009] The first and / or second clutch can be designed to be wet or dry. The first and / or second clutch can have a friction area for frictionally engaging torque transmission depending on an actuation.

[0010] The output element can be designed as a vehicle axle, at least one vehicle wheel and / or differential gear.

[0011] The auxiliary unit can be an air conditioning compressor, in particular an axial piston compressor. The auxiliary unit can be operated by the drive power of the first and / or second drive. The auxiliary unit can be operated by the first or second drive when the vehicle is stationary and using purely electric drive.

[0012] The connection can be arranged between the first drive and the first clutch for a torque-transmitting connection between the auxiliary unit and the first drive. The connection can be arranged between the second drive and the second clutch for a torque-transmitting connection between the auxiliary unit and the second drive.

[0013] The connection can implement at least a rotationally fixed connection. The connection can have a positive, non-positive, and / or material connection. The connection can comprise a toothed connection.

[0014] A torque-transmittable connection is a connection that transmits torque as soon as it is applied, at least in one operating state. A torque-transmitting connection is a connection that transmits torque as soon as it is applied. The connection can comprise, for example, a shaft, a gear, an intermediate shaft, a reversing gear, and / or an endless drive.

[0015] In a preferred embodiment of the invention, it is advantageous if the first drive is connected to the auxiliary unit via the connection in a torque-transmitting manner. The first drive can be connected to the auxiliary unit in a torque-transmitting manner in permanent engagement. A transmission can be operatively arranged between the first drive and the auxiliary unit. The first drive and the auxiliary unit can be connected to one another via the connection in an at least rotationally fixed manner.

[0016] In a specific embodiment of the invention, it is advantageous if the second drive is connected to the auxiliary unit via the connection in a torque-transmitting manner. The second drive can be connected to the auxiliary unit in a torque-transmitting manner in permanent engagement. A transmission can be operatively arranged between the second drive and the auxiliary unit. The second drive and the auxiliary unit can be connected to each other via the connection in an at least rotationally fixed manner.

[0017] In a preferred embodiment of the invention, the first and second clutches are arranged coaxially with each other. This allows the drive device to be designed more cost-effectively and with less installation space. The first and second clutches can be arranged axially and / or radially nested.

[0018] In a specific embodiment of the invention, it is advantageous if the first drive is designed as a first electric motor. The first drive can also be designed as an internal combustion engine.

[0019] In a preferred embodiment of the invention, it is advantageous if the second drive is designed as a second electric motor. The second electric motor can function exclusively or temporarily as a generator.

[0020] In a preferred embodiment of the invention, it is advantageous if a third drive is connected to the output element in a torque-transmitting manner. The third drive can be connected to the output via the first and / or second clutch or a third clutch. The third drive can be embodied as a third electric motor or as an internal combustion engine.

[0021] The third drive can expand the drive configurations of the drive device. For example, a series and / or parallel hybrid drive of the vehicle can be implemented using an internal combustion engine as the third drive.

[0022] The first and third drives and / or the second and third drives may be arranged coaxially.

[0023] In a preferred embodiment of the invention, the connection is operatively arranged between the second drive and the third drive. The connection can be operatively arranged between the second drive and the output element. The connection can be operatively arranged between the third drive and the output element.

[0024] In a preferred embodiment of the invention, the connection is operatively arranged between the first and second drive elements. The connection can be operatively arranged between the first drive element and the output element.

[0025] In a specific embodiment of the invention, it is advantageous if the first and second clutches are designed as partial clutches of a dual clutch. The first and second clutches can be engaged alternately to each other for torque transmission.

[0026] Further advantages and advantageous embodiments of the invention emerge from the description of the figures and the illustrations. Character description

[0027] The invention is described in detail below with reference to the figures. They show in detail: Fig. 1: A schematic representation of a drive device in a specific embodiment of the invention. Fig. 2: A schematic representation of a drive device in another specific embodiment of the invention. Fig. 3: A schematic representation of a drive device in another specific embodiment of the invention.

[0028] Fig. 1 shows a schematic representation of a drive device in a specific embodiment of the invention. The drive device 10 is arranged in a vehicle, preferably a motor vehicle, and comprises a first drive 12, which provides torque and is embodied as a first electric motor 14. Furthermore, a second drive 16, which provides torque and is embodied as an internal combustion engine 18, and a third drive 20, which is embodied as a second electric motor 22, are arranged. The torque provided by the first and second drives 12, 16 can cause the vehicle to move.

[0029] Several drive configurations are possible for operating the vehicle. For example, a parallel hybrid drive is configurable, in which the second drive 16 provides a torque to propel the vehicle, and the first and / or third drive 12, 20 additionally provides an additional torque to propel the vehicle. A serial hybrid drive can also be implemented, in which, for example, the second drive 16 provides a torque to the first drive 12, which uses the torque to generate electrical energy, which is then passed to the third drive 20, which in turn uses the electrical energy to provide drive power to propel the vehicle.

[0030] The first drive 12 is connected to an output element 26, here a differential gear 28, via a transmission 30, via a first clutch 24. The second drive 16 is connected to the output element 26 via a second clutch 32. The third drive 20 is torque-transmitting and permanently engaged with the transmission 30 and the output element 26.

[0031] An auxiliary unit 34 is connected to the first drive 12 in a torque-transmitting manner via a connection 36 arranged between the first drive 12 and the first clutch 24. The auxiliary unit 34 is designed, for example, as an air conditioning compressor 38 and is operated by a torque provided by the first drive 12. When the vehicle is stationary and the first clutch 24 is disengaged, which thus interrupts torque transmission between the first drive 12 and the output element 26, the auxiliary unit 34 can be operated by a torque from the first drive 12.

[0032] The connection 36 is operatively arranged between the first and second drives 12, 16. The first and second clutches 24, 32 are arranged coaxially with each other. The first and third drives 12, 20 are also arranged coaxially with each other.

[0033] Fig. Figure 2 shows a schematic representation of a drive device in another specific embodiment of the invention. The drive device 10 is similar to that shown in Fig. 1 except for the following differences. The first drive 12 is formed by the first electric motor 14, which is connected to the output element 26 via the first clutch 24 in a torque-transmitting manner. The second drive 16 is formed by the second electric motor 22, which is connected to the output element 26 in a torque-transmitting manner via the second clutch 32. The third drive 20 is designed as an internal combustion engine 18, which is connected to the first drive 12 in a torque-transmitting manner in a continuous meshing manner.

[0034] A clutch output 39 of the first and second clutches 24, 32 is connected to a common transmission input shaft 40 for transmitting torque. The transmission input shaft 40 is arranged coaxially with the first and second drives 12, 16. Drive power applied to the transmission input shaft 40 can be transmitted to the output element 26 via the transmission 30.

[0035] The connection 36 is arranged between the second drive 16 and the second clutch 32. The auxiliary unit 34 is driven by a torque from the second drive 16. The second drive 16 is connected to a drive shaft 42 in a torque-transmitting manner, within which the transmission input shaft 40 is arranged. Within the transmission input shaft 40 is another drive shaft 44, to which the first and third drives 12, 20 are connected in a torque-transmitting manner.

[0036] Fig. Figure 3 shows a schematic representation of a drive device in another specific embodiment of the invention. The drive device 10 is as in Fig. 2 with the following differences. The first and second clutches 24, 32 are each designed as partial clutches 46 of a double clutch 48 and can be alternately engaged to transmit torque. If the first clutch 24 is engaged, a torque from the first drive 12 and / or the third drive 20 is transmitted via the first clutch 24 to the output element 26. If the second clutch 32 is alternatively engaged, a torque from the second drive 16 is transmitted to the output element 26.

Claims

[1] Drive device (10) for a vehicle, comprising a first drive (12) providing a torque, which is connected to an output element (26) via a first clutch (24) in a torque-transmittable manner, a second drive (16) providing a torque, which is connected to the output element (26) in a torque-transmittable manner via a second clutch (32), wherein the torque provided by the first and second drives (12, 16) causes the vehicle to move, a connection (36) arranged between one of the drives and one of the clutches for a torque-transmitting connection between an auxiliary unit (34) and one of the drives (12, 16). [2] Drive device (10) according to claim 1, characterized by that the first drive (12) is connected to the auxiliary unit (34) via the connection (36) in a torque-transmitting manner. [3] Drive device (10) according to claim 1 or 2, characterized bythat the second drive (16) is connected to the auxiliary unit (34) via the connection (36) in a torque-transmitting manner. [4] Drive device (10) according to one of the preceding claims, characterized by that the first and second couplings (24) (32) are arranged coaxially to one another. [5] Drive device (10) according to one of the preceding claims, characterized by that the first drive (12) is designed as a first electric motor (14). [6] Drive device (10) according to one of the preceding claims, characterized by that the second drive (16) is designed as a second electric motor (22). [7] Drive device (10) according to one of the preceding claims, characterized by that a third drive (20) is connected to the output element (26) in a torque-transmitting manner. [8] Drive device (10) according to claim 7, characterized bythat the connection (36) is effectively arranged between the second drive (16) and the third drive (20). [9] Drive device (10) according to one of the preceding claims, characterized by that the connection (36) is effectively arranged between the first and second drive (12, 16). [10] Drive device (10) according to one of the preceding claims, characterized by that the first and second clutches (24, 32) are designed as partial clutches (46) of a double clutch (48).

Images