Power-split transmission arrangement

Abstract

The invention relates to a transmission arrangement, in particular for a vehicle, wherein the transmission arrangement comprises: a first transmission part (I) which has a first connection for a drive and a second connection for a first electric machine (1), wherein the first connection and the second connection of the first transmission part (I) can be operatively mechanically connected; - a second transmission part (II), wherein the second transmission part (II) is designed to be lockable, in particular has a lockable shaft, and wherein the second transmission part (II) can be operatively mechanically connected to the first transmission part (I); and a third transmission part (III, IIIa and IIIb) which has a first sub-transmission part (IIIa) having a first connection for a second electric machine (2), and a second sub-transmission part (IIIb) having a second connection for a third electric machine (3), wherein the first sub-transmission part (IIIa) and the second sub-transmission part (IIIb) can be operated independently of one another, wherein the third transmission part (III) is operatively mechanically connected to the second transmission part (II); and wherein the third transmission part (III) has an output of the transmission arrangement.

Description

[0001] 120853P504PC 1 / 32 RENK GmbH

[0002] Description

[0003] Power-split gearbox arrangement

[0004] The present invention relates to a transmission arrangement for a vehicle, in particular for a vehicle with superimposed steering, a drive arrangement comprising the transmission arrangement, and a method for operating the drive arrangement, in particular a computer program or computer program product designed for this purpose.

[0005] The object of the present invention is, in particular, to improve a gear arrangement, and further, in particular, a drive arrangement.

[0006] This problem is solved by a gear arrangement having the features of claim 1, and by a drive arrangement described herein, which in embodiments includes the gear arrangement. The dependent claims relate to advantageous embodiments.

[0007] The following numbering system for the gear assembly and / or its components is intended to be understood without limitation of generality and serves only to simplify the assignment of the described parts / elements. The numbering, such as "first" or "second," does not imply any limitation to a specific quantity of the designated part or element.

[0008] According to one embodiment of the present invention, a transmission arrangement, particularly a power-split arrangement, is provided, especially for a vehicle, and further, particularly for a vehicle having superimposed steering. In one embodiment, the transmission arrangement comprises a first transmission part. In one embodiment, the first transmission part has a first connection for a drive, in particular an internal combustion engine or an electric motor. In one embodiment, the first transmission part has a second connection for a first electric motor. In one embodiment, the first transmission part is configured to connect the first connection to the second 120853P504PC 2 / 32 RENK GmbH

[0009] The connection is to be mechanically connected, in particular in such a way that torque can be transmitted from the first connection to the second connection, or that torque can be transmitted from the second connection to the first connection, especially temporarily. In one embodiment, the first and second connections of the first transmission part are mechanically connectable and / or disconnectable; in particular, the first transmission part is designed or configured for this purpose.

[0010] In one embodiment, the transmission arrangement comprises a second transmission part, wherein the second transmission part is designed to be lockable, in particular such that the second transmission part, or in particular at least a part of the second transmission part, especially a shaft of the second transmission part, is locked in place or can be locked in place or used for this purpose. In one embodiment, the second transmission part has a (mechanical) locking or fixing device, in particular a positive-locking and / or friction-locking brake and / or a (parking) brake, alternatively or additionally an electromagnetically actuated and / or electromagnetically acting brake, which is designed to lock the second transmission part, in particular a shaft that can be locked in place.In one embodiment, the second gear section has a locking mechanism or a locking device configured to lock the second gear section in a fixed position, in particular releasably, and furthermore, in particular, configured to lock the (lockable) shaft, in particular releasably. In one embodiment, the second gear section has a motor, in particular an actuator motor, a stepper motor, and / or a servo motor, configured to (mechanically) lock the second gear section. In one embodiment, a first electrical machine, which can be connected to or is connected to the second port of the first gear section, is configured to control and / or lock the second gear section, wherein the gear arrangement, in one embodiment, has a disconnect clutch in the first gear section, in particular to mechanically disconnect the first port from the second port.In one embodiment, the second gear part is designed to be mechanically connected to the first gear part, in particular, it is connected. In one embodiment, the first 120853P504PC 3 / 32 RENK GmbH.

[0011] The gearbox part and / or the second gearbox part has an interface for connecting the two gearbox parts, in particular for connecting the first gearbox part to the shaft of the second gearbox part, which may be lockable.

[0012] The term "detectable", as used herein, shall preferably be understood as designed for, in particular mechanical, detecting, fixing, securing and / or locking.

[0013] In one embodiment, the transmission arrangement comprises a third transmission part, wherein the third transmission part has a first connection for a second electric machine. In another embodiment, the third transmission part has a second connection for a further, in particular a third, electric machine. In another embodiment, the third transmission part is mechanically connected to the second transmission part, in particular such that when the second transmission part is locked, especially in a first operating state, a part of the third transmission part is also locked. In another embodiment, the third transmission part is mechanically connected to the lockable shaft of the second transmission part. In another embodiment, the locking or stationary state of the second transmission part can be referred to as the first operating state, in particular without limiting the generality of this designation.

[0014] In one embodiment, the transmission arrangement has a third transmission part, wherein the third transmission part comprises a first sub-transmission part and a second sub-transmission part. In one embodiment, the first sub-transmission part has a first connection for a first or second electric machine. In one embodiment, the second sub-transmission part has a second connection for a first or third electric machine. In one embodiment, the first sub-transmission part and the second sub-transmission part of the third transmission part can be operated independently of each other. In one embodiment, the third transmission part is mechanically connected to the second transmission part, in particular via the (lockable) shaft, such that mechanical power can be transferred between the first sub-transmission part and the second sub-transmission part and / or the 120853P504PC 4 / 32 RENK GmbH

[0015] The first sub-gearbox part can be separated from the second sub-gearbox part, in particular in such a way that no mechanical power can be supplied to or exchanged between the first and second sub-gearbox parts, especially when the second gearbox part, in particular the (lockable) shaft, is locked. In one embodiment, the first sub-gearbox part has a first output and the second sub-gearbox part has a second output, in particular the output of the gear assembly.

[0016] In one embodiment, the gear arrangement is configured in a second operating state, which differs from the first, to transmit mechanical power from the first gear section via the second gear section to the third gear section. In one embodiment, particularly for this purpose, the second gear section is not locked or stationary, specifically not adjusted or released, or mechanically locked or not mechanically fixed, in order to transmit torque, or so that torque is or can be transmitted, particularly from the first gear section to the third gear section. In one embodiment, particularly for this purpose, the (lockable) shaft is freely or rotatably adjusted.

[0017] Advantageously, this allows the transmission arrangement to be used more flexibly in one embodiment, in particular enabling operating conditions that are more performant compared to, for example, non-sequential transmission arrangements and / or allow a wider speed range for a vehicle that has this transmission arrangement in one embodiment.

[0018] Advantageously, this allows, in one embodiment, a superposition with stepless speed adjustment to be realized, particularly using the first sub-gearbox and / or the second sub-gearbox. Furthermore, this allows, in one embodiment, a scalable gear arrangement to be realized. Advantageously, this also allows, in one embodiment, the number of (gear) gears to be reduced, particularly compared to superposition gearboxes without stepless speed adjustment.

[0019] Speed ​​adjustment. Advantageously, in one embodiment, a continuously variable power-split drive arrangement can be realized, in particular (in one embodiment), an internal combustion engine (connected to the first connection of the first transmission part) can be operated advantageously at, at least substantially, the same or constant speed, and furthermore, fuel can be saved in particular.

[0020] Advantageously, this makes it easier to provide a scalable transmission for vehicles, especially tracked vehicles, in one version, and furthermore, it is scalable to the size or weight of the vehicle and thus available in versions for comparatively heavy vehicles.

[0021] Advantageously, this allows, in one embodiment, for the directions of the outputs or the output speeds to be different, in particular the directions of the tracks of a tracked vehicle driven by the outputs (first and second output (as described herein)) or directions of rotation of wheels driven by the outputs, furthermore, in particular, curve radii smaller than or equal to the track width, and in particular, turning on the spot (pivot) to be possible.

[0022] In one embodiment, the functional connection between the first gear part and the second gear part has a selectable and / or switchable gear ratio.

[0023] Alternatively or additionally, in one embodiment, a first connection of the third gear part and / or a second connection of the third gear part has a selectable and / or switchable transmission ratio, in particular such that the input of a machine operated at the connection is or can be selected and / or switched in a switchable manner, in particular the connection is provided for this purpose, and furthermore in particular has two or at least two selectable and / or switchable transmission ratios.

[0024] Advantageously, this allows, in one embodiment, for a suitable gear ratio to be selected depending on the requirements for the operation of the gear arrangement, particularly in order to, in 120853P504PC 6 / 32 RENK GmbH

[0025] to increase the efficiency of the arrangement or to provide a more efficient arrangement in a particular design.

[0026] In one embodiment, the third transmission part has a power summation and / or power split, in particular a planetary gear set, in particular two planetary gear sets or at least two planetary gear sets, wherein, in one embodiment, a planetary gear set is assigned to each output, further in particular, wherein, in one embodiment, the first sub-transmission part has a power summation and / or power split, in particular a planetary gear set, which has a first output, and wherein, in one embodiment, the second sub-transmission part has a power summation and / or power split, in particular a planetary gear set, which has a second output. In one embodiment, the first connection of the third transmission part and the second connection of the third transmission part act on a sun of one or the other.of, in particular, a respective, planetary gear set, wherein, in one embodiment, the output of the third gear set is operatively connected to a planet carrier of the planetary gear set, in particular the first output to a planet carrier of one planetary gear set, in particular the first sub-gear set, and the second output to a planet carrier of the other planetary gear set, in particular the second sub-gear set. In one embodiment, the power summation and / or power splitting is configured to summate power from the first gear set, which is or can be transmitted via the second gear set, with power that is driven into the third gear set and / or to split power, in particular via the second gear set, and furthermore in particular when it is set or not locked, to the other sub-gear set.

[0027] Advantageously, this allows, in one embodiment, for a gear ratio to be provided by the planetary gearbox for the first and / or second operating state, in particular for power to be easily branched or summed, especially as required. 120853P504PC 7 / 32 RENK GmbH

[0028] In one embodiment, an operative connection between the second gear part and the third gear part acts on a ring gear of the planetary gear set of the third gear part. In another embodiment, an operative connection between the second gear part and the third gear part acts on a ring gear of the respective planetary gear set of the third gear part, which has an operative connection to the output, particularly if the third gear part has more than one, in particular two or more, planetary gear sets.In one embodiment, an operative connection of the second transmission part acts on a first sub-transmission part of the third transmission part and on a second sub-transmission part of the third transmission part, in particular on a ring gear of a power split and / or power summation of the first sub-transmission part and on a ring gear of a power split and / or power summation of the second sub-transmission part, further in particular on a ring gear, in particular of a planetary gear, of the first sub-transmission part and on a ring gear, in particular of a planetary gear, of the second sub-transmission part.

[0029] Advantageously, this allows the gearbox arrangement to be operated more efficiently, in particular more reliably and / or more precisely, especially by transferring power from the first sub-gearbox to the second sub-gearbox or vice versa.

[0030] In one embodiment, a brake, in particular a parking brake or vehicle brake (or the like), is operatively connected to and / or arranged on the planet carrier of the planetary gear set of the third gear set, in particular directly or indirectly. In one embodiment, the planet carriers of the planetary gear sets that have an output (or (in one embodiment) act on an output as the "last" planetary gear set) have a brake that is operatively connected to and / or arranged on the planet carrier of the planetary gear set, in particular directly or indirectly. In one embodiment, the first sub-gear set and the second sub-gear set each have a brake at the corresponding location (on the planet carrier). 120853P504PC 8 / 32 RENK GmbH

[0031] Advantageously, this allows, in one design, for braking to be carried out more reliably and / or efficiently.

[0032] In one embodiment, the transmission arrangement has a reduction gear at the output, or (in one embodiment) at the outputs (at the first output and at the second output). Alternatively or additionally, the transmission arrangement has a transmission ratio at the output, in particular to a drive wheel, especially of a chain drive.

[0033] Advantageously, this allows, in one design, for the setting of an optimal gear ratio or rotational speed for the output, particularly for the track of a tracked vehicle. In one design, this also enables a more compact construction.

[0034] According to one embodiment of the present invention, a drive arrangement is provided, in particular a drive arrangement comprising a transmission arrangement as described herein. In one embodiment, an internal combustion engine is arranged at the first connection of the first transmission part, in particular in mechanical operative connection with the first connection of the first transmission part or the first transmission part itself. In another embodiment, a first electric machine is arranged at the second connection of the first transmission part, in particular in mechanical operative connection with the second connection of the first transmission part or the first transmission part itself. In another embodiment, a second electric machine is arranged at the first connection of the third transmission part, in particular in mechanical operative connection with the first connection of the third transmission part or the third transmission part itself.In one embodiment, a third electric machine is arranged at the second connection of the third transmission section, in particular in mechanical operative connection with the second connection of the third transmission section or with the third transmission section itself. In another embodiment, the internal combustion engine comprises a diesel generator, a gas turbine, or the like, or is designed as such. 120853P504PC 9 / 32 RENK GmbH.

[0035] Advantageously, this makes it possible, in one embodiment, to realize a more compact drive arrangement, in particular a drive arrangement that scales or is scalable with the weight of a vehicle to be driven.

[0036] In one embodiment, the first operating state (of the transmission arrangement) has a first sub-operating state (of the drive arrangement) in which the first electric machine of the first transmission section is configured to operate as a generator, in particular is or is operated as a generator, and furthermore, in particular, is or is driven by the internal combustion engine, or is configured to do so. Additionally or alternatively, in one embodiment and / or in the first operating state, the first electric machine of the first transmission section is configured to provide energy for the operation of the second electric machine and / or the third electric machine.

[0037] In one embodiment, in the first sub-operating state of the first operating state (of the transmission arrangement), the first transmission section is configured to operate the first electric machine as a generator using the internal combustion engine. In another embodiment, the first electric machine can be operated as a generator using the internal combustion engine, or the first transmission section is configured for this purpose.

[0038] The term "operating state," as used herein, is preferably to be understood as a transmission state. The term "sub-operating state," as used herein, is preferably to be understood as a state of the drive arrangement, in particular as the operating state(s) of the electric machine(s) and / or drives, especially the internal combustion engine, which, in one embodiment, depend on or are based on an operating state of the transmission arrangement, where "sub-" is introduced solely for the purpose of differentiation, in particular without limiting its generality. 120853P504PC 10 / 32 RENK GmbH

[0039] Advantageously, in one embodiment, this makes it possible for energy to be provided by the generator-operated first electric machine to the motor-operated second electric machine and / or the third electric machine.

[0040] Advantageously, in one embodiment, this makes it possible to provide an electrical supply to the second electric machine and / or the third electric machine by the first electric machine when the first transmission part is mechanically separated from the third transmission part, in particular by the fixed second transmission part, and in particular the vehicle can remain in this operating state for a longer period, especially if the internal combustion engine is operated in a range that is, at least essentially, optimal for the internal combustion engine.

[0041] In one embodiment, the transmission arrangement and / or the drive arrangement has a second sub-operating state of the first operating state, or the transmission arrangement and / or the drive arrangement is configured for this purpose. In one embodiment, the second sub-operating state of the first operating state is characterized in that the internal combustion engine is decoupled from the first electric machine, in particular by means of a disconnect clutch, and wherein the first electric machine is or is or can be operated by an energy storage device, and further, in particular, additionally or alternatively by a diesel generator (which is not the internal combustion engine or is or can be provided in addition to the internal combustion engine).

[0042] Advantageously, this allows, in one embodiment, a jump start of the drive arrangement or of the vehicle driven by the drive arrangement (without restriction of generality).

[0043] In one embodiment, particularly in a first operating state, the internal combustion engine can be started by the first electric machine, especially while the drive arrangement is (already), at least substantially, purely electrically operated, in particular the third transmission part.120853P504PC 11 / 32 RENK GmbH

[0044] (is or is purely electrically operated), furthermore, in particular, the second electric machine and / or the third electric machine, especially by means of a battery, a rechargeable battery, a fuel cell, a diesel generator, and / or the like. In one embodiment, this is or can be referred to as the third sub-operating state of the first operating state. In one embodiment, the transmission arrangement and / or the drive arrangement has a third sub-operating state of the first operating state. In this third sub-operating state, in one embodiment, the first electric machine is or is operated by a diesel generator and / or an energy storage device. In one embodiment, the transmission arrangement and / or the drive arrangement is designed or configured for the third sub-operating state.

[0045] Advantageously, in one embodiment, this allows the internal combustion engine to be started at a later time, so that the vehicle can enter or enters the first sub-operating state at a later time, and in one embodiment, the second electric machine and / or the third electric machine can be operated by the generator-operated first electric machine, wherein the first electric machine (in this first sub-operating state) is driven or is driven or can be driven by the internal combustion engine, in particular to provide electrical energy for the second electric machine and / or the third electric machine.

[0046] Advantageously, this allows, in one version, for the vehicle to start more quickly, or alternatively, for the internal combustion engine to be started while driving, particularly to supply additional electrical energy or to maintain a higher level of electrical energy. This can increase the vehicle's safety, especially for military vehicles (faster to take cover or get out of cover), particularly without having to wait for the internal combustion engine to start. 120853P504PC 12 / 32 RENK GmbH

[0047] In one embodiment, the second operating state has a first sub-operating state in which the internal combustion engine is configured to provide (mechanical) power, in particular directly, via the second transmission part for the third transmission part, in particular provides this (mechanical) power or is used for this purpose.

[0048] Advantageously, in one version, this makes it possible for a vehicle powered by the drive arrangement to perform a faster sprint.

[0049] In one embodiment, the second electric machine and / or the third electric machine are configured to act on the output even when the second gear unit is stationary (=first operating state of the gear arrangement). In particular, in one embodiment, a first output (of the third gear unit) of the gear or drive arrangement is assigned to the second electric machine, and in another embodiment, a second output is assigned to the third electric machine, in particular such that the respective output can be operated by the respective electric machine. In one embodiment, the "disengaging" of the second gear unit is achieved, in particular such that mechanical power can be transmitted from the first gear unit via the second gear unit to the third gear unit.The second operating state refers in particular to the transmission of mechanical power from the internal combustion engine to the third transmission part (via the second transmission part), in particular to the first sub-transmission part and / or the second sub-transmission part, as the first sub-operating state of the second operating state.

[0050] Advantageously, this allows the number of gears in the transmission or transmission assembly to be reduced compared to stepped steering gears. Advantageously, this makes it possible, in one embodiment, for the installation space of the transmission assembly to be, at least essentially, the same as or smaller than that of a (only) power-split transmission. Further 120853P504PC 13 / 32 RENK GmbH

[0051] Advantageously, in one embodiment, this allows a transmission and / or drive arrangement to be provided that is configured for steer-by-wire, drive-by-wire, and / or, in particular, brake-by-wire, especially for purely electric driving, which is also referred to as "silent drive" in tracked vehicles. Furthermore, in one embodiment, this advantageously enables a traction force hyperbola to be represented more easily, and in particular to be approximated more accurately, with the approximation being limited (only) by the operating limit(s) of the electric machine(s) used, and with the electric machine(s) being able to be operated in overload mode, particularly temporarily, in order to approximate the traction force hyperbola (more closely).In one embodiment, an electrical machine, in particular the first electrical machine, the second electrical machine and / or the third electrical machine, is designed for overload operation.

[0052] In one embodiment, the internal combustion engine has a rated power output that is, at least substantially, designed to operate the second electric machine and / or the third electric machine, in particular to operate the second electric machine and the third electric machine, furthermore, in particular, with the aid of the first electric machine driven by the internal combustion engine and operated as a generator. In another embodiment, the internal combustion engine has a lower rated power output than the first electric machine; a rated power output that is, at least substantially, the same; or a higher rated power output than the first electric machine.

[0053] Advantageously, in one embodiment, this allows the internal combustion engine, particularly due to the continuously variable design of the transmission arrangement, to be operated at, at least substantially, the same and / or constant speed, especially at a speed that is optimal and / or optimized for the operation of the internal combustion engine. In one embodiment, optimization refers to lower fuel consumption and / or, at least substantially, minimal specific fuel consumption. Advantageously, in one embodiment, this allows the internal combustion engine to be operated at a constant speed, especially at a speed that is optimal and / or optimized for the operation of the internal combustion engine.

[0054] Design, enabling a continuously variable power-split hybrid to be provided if and when the internal combustion engine feeds the second electric machine and / or the third electric machine via the first electric machine.

[0055] In one embodiment, the transmission arrangement and / or the drive arrangement includes an energy storage device, in particular a battery and / or an (ultra)capacitor or the like. In one embodiment, the energy storage device is configured to operate vehicle functions that are not, or not directly, related to the ferry operation. In one embodiment, the transmission arrangement and / or the drive arrangement includes a diesel generator which, in one embodiment, is configured to provide electrical energy, in particular for one or more of the electric machines and / or for a boost mode in which, in one embodiment, one or more of the electric machines are or can be operated under overload, in particular temporarily.

[0056] Advantageously, this allows, in one embodiment, for the integration of an energy storage device, particularly depending on the vehicle's use, whereby this device is not, in one embodiment, absolutely necessary for ferry operation and / or a driving function of the vehicle. Advantageously, this allows, in one embodiment, for the drive system to be boosted using the diesel engine.

[0057] In one embodiment, the transmission arrangement has a secondary drive that operates, or can operate, mechanical and / or electrical (auxiliary) units, or is equipped for this purpose.

[0058] Advantageously, this design allows a fan or similar device to be operated via the power take-off. 120853P504PC 15 / 32 RENK GmbH

[0059] In one embodiment, the drive arrangement is designed to operate the first electric machine in a torque-controlled manner and the second electric machine and the third electric machine in a speed-controlled manner.

[0060] According to one embodiment of the present invention, a vehicle, in particular a tracked vehicle, is provided. In one embodiment, the vehicle has a drive arrangement as described herein. In one embodiment, the vehicle has a weight of more than 5 t. In one embodiment, the vehicle has a weight of more than 40 t.

[0061] In one embodiment, the drive arrangement or the vehicle having a drive arrangement described herein is configured for one or more operating modes. In one embodiment, the drive arrangement has different operating modes, in particular an efficient operating mode, an operating mode with, at least substantially, maximization of a (delivered) torque, a quiet operating mode, an operating mode in which the drive arrangement is more efficient or (comparatively) most efficient, or the drive arrangement described herein is configured or designed for this purpose. These operating modes are to be understood without limitation of generality. In one embodiment, the drive arrangement has a quiet operating mode in which, in one embodiment, the transmission arrangement is in or operated in the first operating state; in particular, the drive arrangement is configured or designed for a quiet operating mode in the first operating state.It is designed to assume or realize the first operating state, in particular a second sub-operating state of the first operating state. In one embodiment, a diesel generator can be engaged or already engaged in this operating mode, in particular to supply or provide power for one and / or the electric machines. In another embodiment, this operating mode is, at least substantially, a purely electric operating mode of the drive arrangement or of the vehicle that incorporates the drive arrangement.

[0062] Advantageously, this allows, in one embodiment, the drive arrangement and / or a drive arrangement comprising 120853P504PC 16 / 32 RENK GmbH

[0063] The vehicle can be operated more quietly and / or, in particular, without relying on starting the internal combustion engine (in the first operating state of the transmission arrangement), can operate (at least essentially) purely electrically. Advantageously, in one embodiment, this allows the drive arrangement to provide drive or propulsion (for forward or reverse travel of the vehicle) at least essentially without delay. In another embodiment, this allows the drive arrangement to provide a comparatively high torque, especially if the ring gear of the power summation and / or power split can be supported by the fixed second transmission part and, in another embodiment, an output is provided via a planet carrier.

[0064] In one embodiment, the drive arrangement has an operating mode in which the available electrical energy is maximized, at least substantially, particularly temporarily and / or over a predetermined period. For this purpose, in one embodiment, the electric machine can be operated as a generator, particularly driven / operated by the internal combustion engine. In another embodiment, a diesel generator can be or is additionally engaged, particularly to provide additional current, especially for operating the second electric machine and / or the third electric machine. For this purpose, the drive arrangement can, in one embodiment, be in or be operated in a first operating state, particularly with the second gear section locked, or in a first sub-operating state.

[0065] Advantageously, this allows, in one embodiment, for a large amount of electrical power to be made available for short periods, particularly compared to other operating states, and / or for the internal combustion engine to be operated, particularly in the longer term, at an operating point that is at least essentially optimal for the internal combustion engine, so that, in one embodiment, in particular 120853P504PC 17 / 32 RENK GmbH

[0066] In the long term, a high level of available electrical power is provided, or can be provided, compared to other operating modes.

[0067] Advantageously, this allows, in one embodiment, for an internal combustion engine to be operated for a longer period of time, in particular through (longer) operation at, at least essentially, the optimal operating point of the internal combustion engine.

[0068] In one embodiment, the transmission arrangement and / or the drive arrangement is configured to change the operating states and / or operating modes, in particular based on an operating requirement. In one embodiment, the drive arrangement has one or more driving ranges, in particular based on the operating modes described herein and / or based on a vehicle weight.

[0069] In one embodiment, the first electric machine is torque-controlled, or the gearbox and / or drive arrangement is configured to operate the first electric machine in a torque-controlled manner. In another embodiment, the second electric machine and / or the third electric machine are speed-controlled, or the gearbox and / or drive arrangement is configured to operate the second electric machine and / or the third electric machine in a speed-controlled manner.

[0070] In one version, this allows the internal combustion engine to be operated more efficiently.

[0071] In one embodiment, the classification of operating states and / or operating modes depends on a rated power of the transmission arrangement, in particular the drive arrangement, and further, in particular, on a weight of the vehicle that has the transmission arrangement, in particular the drive arrangement.

[0072] Advantageously, this allows a scalable gearbox arrangement or scalable drive arrangement to be realized in a single design. 120853P504PC 18 / 32 RENK GmbH

[0073] In particular, the transmission arrangement and / or the drive arrangement is easier to scale and / or adapt to different vehicle types.

[0074] Vehicle weights are adjustable.

[0075] According to one embodiment of the present invention, a method for operating a gear arrangement, in particular a gear arrangement as described herein, is provided.

[0076] In one embodiment, the method includes determining an operating requirement for the drive arrangement, wherein the operating requirement describes a control signal, in particular from an accelerator pedal (or the like) and / or a steering system, in particular from a steering wheel, joystick, or the like; a driving state of the vehicle; and / or a state of the drive arrangement, in particular a state, further in particular an operating state, of the internal combustion engine, the first electric machine, the second electric machine, and / or the third electric machine. In another embodiment, determining an operating requirement includes determining a prediction, in particular using artificial intelligence and / or machine learning, for the operating requirement, wherein the operation is additionally based on the determined prediction.

[0077] Advantageously, this allows the drive arrangement to be operated more efficiently in one design.

[0078] In one embodiment, the operation further comprises switching the transmission ratio of the first connection of the third transmission part; switching the transmission ratio of the second connection of the third transmission part; and / or switching the transmission ratio of the operative connection between the first transmission part and the second transmission part, in particular simultaneous switching. In one embodiment, the transmission arrangement or the drive arrangement, in particular for this purpose, has clutches or is equipped for this purpose. In one embodiment, the transmission arrangement or the drive arrangement (for this purpose) has a switchable 120853P504PC 19 / 32 RENK GmbH

[0079] The transmission has two stages, in particular at least two stages. In one embodiment, the switching point depends on the power and / or speed of the chain and / or the power of the electric machines, in particular the first electric machine and the second electric machine or the first electric machine and the third electric machine. In another embodiment, the switching point, in particular the transmission ratio in the first sub-transmission and / or in the second sub-transmission, is additionally or alternatively dependent on a speed limit of the second electric machine and / or the third electric machine. In another embodiment, the switching point, in particular the transmission ratio from the first transmission to the second transmission, depends on the internal combustion engine and / or the first electric machine, in particular on one or more of its characteristic parameters.In one embodiment, the switchable transmission of the first connection of the third gear part and / or the switchable transmission of the second connection of the third gear part features a reversal of the direction of rotation.

[0080] Advantageously, in one embodiment, this allows the transmission arrangement or drive arrangement to be used for comparatively high torques, particularly for a rated output of the first and / or second or third electric machine exceeding 75 kW, or exceeding 200 kW and / or less than 500 kW. In one embodiment, the mechanical output of the internal combustion engine is less than the electrical output of the, in particular all, electric machines of the drive arrangement.

[0081] According to one embodiment of the present invention, a system for operating and / or monitoring a drive arrangement described herein is provided. In one embodiment, the system is configured to carry out a method described herein. In one embodiment, the system includes means for determining an operating requirement, in particular a sensor or at least one sensor. In one embodiment, the system includes means for 120853P504PC 20 / 32 RENK GmbH

[0082] Operation of the drive arrangement, in particular at least one control and / or regulation system.

[0083] A means according to the present invention can be configured as hardware and / or software, in particular comprising at least one processing unit, preferably a microprocessor unit (CPU), graphics processing unit (GPU), or the like, preferably connected to a storage and / or bus system via data or signals, and / or comprising one or more programs or program modules. The processing unit can be configured to execute instructions implemented as a program stored in a storage system, to acquire input signals from a data bus, and / or to output signals to a data bus. A storage system can comprise one or more, in particular different, storage media, in particular optical, magnetic, solid-state, and / or other non-volatile media. The program can be configured to embody the methods described herein.is able to execute, so that the processing unit can carry out the steps of such procedures and thus, in particular, operate or monitor the drive arrangement.

[0084] A computer program product may, in one embodiment, include a storage medium, in particular a computer-readable and / or non-volatile medium, for storing a program or instructions, or with a program or instructions stored thereon. In one embodiment, the execution of this program or these instructions by a system or a controller, in particular a computer or an arrangement of several computers, causes the system or the controller, in particular the computer(s), to execute a procedure described herein or one or more of its steps, or the program or instructions are configured for this purpose.

[0085] In one embodiment, one or more, in particular all, steps of the process are fully or partially computer-implemented, or one or more are computer-implemented. 120853P504PC 21 / 32 RENK GmbH

[0086] several, in particular all, steps of the procedure are carried out fully or partially automatically, in particular by the system or its means.

[0087] Further advantages and features will become apparent from the dependent claims and the exemplary embodiments. These are shown, in part schematically:

[0088] Fig. 1: a gear arrangement and a drive arrangement according to one embodiment in a first operating state;

[0089] Fig. 2: the gear arrangement and the drive arrangement of Fig. 1 in a second operating state;

[0090] Fig. 3: a gear arrangement and a drive arrangement according to a further embodiment of the present invention in a first operating state;

[0091] Fig. 4: the gear arrangement and the drive arrangement of Fig. 3 in a second operating state; and

[0092] Fig. 5: a block diagram of a method for operating a drive arrangement.

[0093] Fig. 1 schematically shows an embodiment of a transmission arrangement and a drive arrangement, wherein the drive arrangement, in addition to the transmission arrangement, includes the drives shown in black. The transmission arrangement can be used in embodiments to provide a continuously variable, power-split transmission, particularly for a vehicle, more specifically for a wheeled vehicle, such as a Boxer with, for example, a 4x4 or 8x8 or the like; or a tracked vehicle, more specifically a military vehicle or military tracked vehicle. Fig. 1 schematically shows a first transmission part I of the transmission arrangement, which has a connection for a drive and a connection for a first electric motor. Fig. 1 also schematically shows a second transmission part II, which is designed to be lockable. The embodiment shown in Fig. 1 schematically shows a shaft that can be locked by means of a brake. Furthermore, Fig.1120853P504PC 22 / 32 RENK GmbH.

[0094] Schematically, a third transmission part III, which has an output, here or in one embodiment a first sub-transmission part Illa and a second sub-transmission part llibb, in particular on opposite sides of the transmission arrangement, in one embodiment for a drive side and / or chain on the left side in the direction of travel of a vehicle or tracked vehicle and for a drive side and / or chain on the right side in the direction of travel of the vehicle or tracked vehicle (without limiting the generality). The third transmission part III shows in Fig. 1 a planetary gear whose ring gear is operatively connected to the second transmission part II, or a left-hand planetary gear referenced to the plane of the blade, in particular of the first sub-transmission part Illa, and a right-hand planetary gear, in particular of the second sub-transmission part llibb, whose ring gears are each operatively connected to or mesh with the second transmission part II or are coupled to the second transmission part II.The second transmission part II connects or makes connectable sub-transmission parts Illa and lllb, particularly when the second transmission part II is loosened, released, or adjusted (i.e., not locked or fixed), so that mechanical power can be transferred between sub-transmission parts Illa and lllb. Transmission part II is lockable as described herein, which means that, in particular, no mechanical power can be supplied to or exchanged between sub-transmission parts Illa and lllb, and especially that power cannot flow from the (left) first sub-transmission part Illa to the (right) second sub-transmission part lllb, particularly when the second transmission part II is mechanically locked.In the locked state, gear part III can support torque, in particular on the locked second gear part II, and thereby, in one embodiment, generate higher torques on the output, in particular on the output of the first sub-gear part Illa and / or on the output of the second sub-gear part llibb.

[0095] Once the shaft of the second transmission part II is locked (particularly in a first operating state, as described herein), the first transmission part I can be disengaged from the second transmission part II, in one embodiment, particularly by means of a switchable clutch (not shown). Furthermore, locking the second transmission part II disengages the ring gear of the 120853P504PC 23 / 32 RENK GmbH

[0096] planetary gear set with fixed or the ring gears of the planetary gears.

[0097] Advantageously, the resulting transmission can, in one embodiment, be used for reverse travel, comparatively slow forward travel, and / or purely electric travel of the vehicle; in particular, the transmission is specifically designed for this purpose. In one embodiment, an internal combustion engine B can be operated in the first transmission section I in this first operating state, in particular such that the power of the internal combustion engine B is supplied by an electric machine 1 in the first transmission section I (at the second terminal of the first transmission section I), in particular as a generator, so that the first electric machine 1 provides electrical power which, in one embodiment, is supplied by the electric machine 1.The electrical power can be used in the third transmission section III, in particular in the second electrical machine 2 and / or the third electrical machine 3, and in particular is supplied to them. In one embodiment, the first transmission section I has a switchable clutch by means of which, in a first operating state, the first transmission section I can be separated from the second transmission section II, and in particular can be decoupled, in particular in such a way that the internal combustion engine B and / or the first electrical machine 1 can be operated, in particular freely. The freehand lines in Fig. 1, and in particular also in the other figures, represent mechanical connections, and the dashed freehand lines, in particular temporary or optional / additional, electrical connections. In Figs. 1 and 3, the first operating state is shown schematically.2 and 4 are the second operating state.

[0098] With the second transmission section II transmitting torque, particularly in a second operating state, torque from the internal combustion engine B and / or the first electric machine 1 can be transmitted via the second transmission section II to the third transmission section III, in particular such that the torque of the electric machine(s) 2, 3 of the third transmission section III is or can be supplemented by the torque of the drive(s) of the first transmission section I. In one embodiment, in the second operating state, the 120853P504PC 24 / 32 RENK GmbH

[0099] Internal combustion engine B transmits torque to the third transmission part III and the first electric machine 1 of the first transmission part I is operated as a generator with part of the torque, in particular such that the electrical power generated in the process can be transmitted to the electric machine(s) 2, 3 of the third transmission part III.

[0100] In one embodiment, the first transmission part I has a switchable clutch by means of which an operative connection between the drive, in particular the internal combustion engine B, and the first electric machine 1 can be disconnected, in particular temporarily, in such a way that the first electric machine 1 is or can be decoupled from the drive, in particular the internal combustion engine B (not shown in Fig. 1).

[0101] In Fig. 1 (as well as in the further Figs. 2 to 4) a brake is also shown arranged on the planet carrier of the planetary gear.

[0102] Fig. 2 schematically shows a second operating state of the transmission arrangement or drive arrangement of Fig. 1. In contrast to Fig. 1, the second transmission part II now establishes a mechanical connection between the first transmission part I and the third transmission part III, whereby the power of the internal combustion engine B is or can be summed with the power of the second electric machine 2 or with the power of the third electric machine 3. Furthermore, it is schematically shown that the first electric machine 1 can continue to be operated, or is operated, as a generator, in particular to supply current to the second electric machine 2 and / or the third electric machine 3.

[0103] The arrangement shown in Fig. 3 differs from the arrangements in Figs. 1 and 2 in that various gear ratios between the electric machines 2, 3 and the power summation unit or the planetary gear in the third gear unit III are available or encompassed by the gear arrangement. Furthermore, another selectable gear ratio between the first gear unit I and the second gear unit II is shown schematically. 120853P504PC 25 / 32 RENK GmbH

[0104] In this embodiment, the respective parts for the gear ratio selection have one or more clutches (not shown) which, in one embodiment, are or can be engaged simultaneously, at least substantially, in the first gear part I and in the third gear part III, particularly based on an operational requirement.

[0105] Fig. 4 shows the transmission or drive arrangement of Fig. 3 in a second operating state. The freehand lines schematically represent the power distribution from the first transmission section I via the second transmission section II to the third transmission section III and the outputs. The outputs are shown only schematically and, in one embodiment, may have a gear ratio as shown by the gears on or attached to the planetary carrier of the power summation unit, and / or a reduction gear that has or provides a corresponding gear ratio. As also shown in the second operating state in Fig. 2, in one embodiment, particularly depending on a driving condition and / or an operating requirement, the second electric machine 2 and / or the third electric machine 3 may, in particular additionally, be supplied with current from a generator-operated first electric machine 1.

[0106] Fig. 5 schematically shows a block diagram of one embodiment of a method, where S10 represents the determination of an operating requirement and S20 the operation of the drive arrangement based on the determined operating requirement. Furthermore, S30, shown as a dashed line, represents the switching of a transmission, which in one embodiment is also based on the determined operating requirement and / or an operating state of the arrangement. It is further shown that the method can be, and is, repeated continuously, semi-continuously, and / or intermittently.

[0107] In the present disclosure, “has an X” generally does not imply an exhaustive list, but is a shorthand for “has at least one X” and also includes “has two or more X” as well as “has Y in addition to X”. Although exemplary statements were made in the preceding description,120853P504PC 26 / 32 RENK GmbH

[0108] As explained above, it should be noted that a multitude of variations are possible. Furthermore, it should be noted that the exemplary embodiments are merely examples and are not intended to restrict the scope of protection, applications, or structure in any way. Rather, the preceding description provides the skilled person with a guideline for implementing at least one exemplary embodiment, whereby various modifications, particularly with regard to the function and arrangement of the described components, can be made without departing from the scope of protection as defined by the claims and these equivalent combinations of features. 120853P504PC 27 / 32 RENK GmbH

[0109] List of reference signs

[0110] 1 first electric machine

[0111] 2 second electric machine

[0112] 3 third electric machine

[0113] I first gearbox part

[0114] II second gearbox part

[0115] III third gearbox part

[0116] Illa first sub-gearbox (of the third gearbox part) lllb second sub-gearbox (of the third gearbox part) B internal combustion engine

[0117] S10 Determining an operational requirement

[0118] S20 Operation

[0119] S30 Shifting

Claims

120853P504PC 28 / 32 RENK GmbH Patent claims 1. Gearbox arrangement, in particular for a vehicle, wherein the gear arrangement comprises a first gear part (I) which has a first connection for a drive and a second connection for a first electrical machine (1), wherein the first connection and the second connection of the first gear part (I) are mechanically connectable; - a second transmission part (II), wherein the second transmission part (II) is designed to be lockable, in particular having a lockable shaft, and wherein the second transmission part (II) is mechanically connectable to the first transmission part (I); and - a third transmission part (III, Illa and lllb) comprising a first sub-transmission part (Illa) having a first connection for a second electric machine (2) and a second sub-transmission part (lllb) having a second connection for a third electric machine (3), wherein the first sub-transmission part (Illa) and the second sub-transmission part (lllb) are operable independently of each other, wherein the third transmission part (III) is mechanically connected to the second transmission part (II); and wherein the third transmission part (III) has an output of the transmission arrangement.

2. Gear arrangement according to the preceding claim, characterized by a first operating state in which the second gear part (II), in particular the lockable shaft of the second gear part (II), is locked, so that a part of the third gear part (III) is locked by the second gear part (II); and characterized by a second operating state in which the second gear part (II), in particular the shaft of the second gear part (II), is adjusted so that mechanical power can be transmitted from the first gear part (I) via the second gear part (II) to the third gear part (III).

3. Gear arrangement according to one of the preceding claims, characterized in that an operative connection of the first gear part (I) with the second gear part (II) provides a selectable and / or switchable transmission ratio. 120853P504PC 29 / 32 RENK GmbH exhibits; and / or that a first connection of the third transmission part (III) and / or a second connection of the third transmission part (III) has a selectable and / or switchable transmission ratio.

4. Gear arrangement according to one of the preceding claims, characterized in that the first connection of the third gear part (III) and the second connection of the third gear part (III) act on a sun of a planetary gear, wherein the output of the third gear part (III) is operatively connected to a planet carrier of the planetary gear.

5. Gear arrangement according to the preceding claim, characterized in that an operative connection of the second gear part (II) with the third gear part (III) acts on a ring gear of the planetary gear of the third gear part (III).

6. Gear arrangement according to one of the preceding claims 4 or 5, characterized in that a brake is operatively connected to the planet carrier of the planetary gear of the third gear part (III).

7. Drive arrangement comprising a transmission arrangement according to one of the preceding claims, characterized in that an internal combustion engine (B) is arranged at the first connection of the first transmission part (I), in particular in a mechanical operative connection; and wherein a first electric machine (1) is arranged at the second connection of the first transmission part, in particular in a mechanical operative connection; and wherein a second electric machine (2) is arranged at the first connection of the third transmission part (III), in particular in a mechanical operative connection; and wherein a third electric machine (3) is arranged at the second connection of the third transmission part (III), in particular in a mechanical operative connection.

8. Drive arrangement according to the preceding claim, characterized by a first sub-operating state of the first operating state in which the first electric machine (1) of the first transmission part (I) operates as a generator. 120853P504PC 30 / 32 RENK GmbH is operated and is designed to be driven by the internal combustion engine (B); and / or wherein the first electric machine (1) of the first transmission part (I) is designed to provide energy for the operation of the second electric machine (2) and / or the third electric machine (3).

9. Drive arrangement according to one of the preceding claims 7 or 8, characterized by a second sub-operating state of the first operating state in which the first electric machine (1) is configured to start the internal combustion engine (B).

10. Drive arrangement according to one of the preceding claims 7 to 9, characterized by a first sub-operating state of the second operating state in which the internal combustion engine (B) directly provides power via the second transmission part (II) for the third transmission part (III).

11. Drive arrangement according to one of the preceding claims, characterized in that the first electric machine (1) in the first sub-operating state of the first operating state or in generator operation is configured to drive the second electric machine (2) and the third electric machine (3) and / or characterized in that the internal combustion engine (B) has a lower rated power than the first electric machine (1).

12. Method for operating a drive arrangement, comprising: - Determining an operating requirement for a drive arrangement according to one of claims 7 to 11, wherein the operating requirement describes a control signal; a driving state and / or a state of the drive arrangement; - Operate at least one of: the internal combustion engine (B), the first electric machine (1), the second electric machine (2) and / or the third electric machine (3); in a first or a second sub-operating state, based on the determined operating requirement. 120853P504PC 31 / 32 RENK GmbH 13. Method according to one of the preceding claims, characterized in that the operation further comprises a switching of the transmission ratio between the first connection of the third transmission part (III) and the third transmission part (III); a switching of the transmission ratio between the second connection of the third transmission part (III) and the third transmission part (III) and / or a switching of the transmission ratio of the operative connection between the first transmission part (I) and the second transmission part (II).

14. System for operating and / or monitoring a drive arrangement according to one of claims 7 to 11, in particular a vehicle which is equipped and / or comprises a method according to one of the preceding claims 12 or 13: - Means of determining an operational requirement; - Means for operating the drive mechanism.

15. Computer program or computer program product, wherein the computer program or computer program product, in particular stored on a computer-readable and / or non-volatile storage medium, contains instructions which, when executed by one or more computers or a system according to claim 14, cause the computer(s) or system to perform a method according to any one of claims 12 to 13.

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