Power-split gearbox arrangement

Abstract

Gear arrangement, in particular for a vehicle, wherein the gear arrangement comprises a first gear part (I) having 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 gear part (I) are mechanically connectable; - a second gear part (II), wherein the second gear part (II) is designed to be lockable, in particular having a lockable shaft, and wherein the second gear part (II) is mechanically connectable to the first gear part (I);and a third transmission part (III, IIIa and IIIb) comprising 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) 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.

Description

[0001] 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.

[0002] For the state of the art, reference is made to CN 1 06 915 243 A.

[0003] The object of the present invention is, in particular, to improve a gear arrangement, and further, in particular, a drive arrangement.

[0004] 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.

[0005] 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 restriction on the quantity of the designated part or element.

[0006] 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 mechanically connect the first connection to the second connection, in particular such 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, in particular temporarily.In one embodiment, the first connection and the second connection of the first gearbox part can be mechanically connected and / or separated; in particular, the first gearbox part is designed or configured for this purpose.

[0007] 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 or the lockable shaft.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 further, 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 connectable to the first gear part, in particular, it is connected. In another embodiment, the first gear part and / or the second gear part has an interface for connecting the two gear parts, in particular for connecting the first gear part to the shaft of the second gear part, which may be lockable.

[0008] The term "detectable", as used herein, shall preferably be understood as designed for, in particular mechanical, detecting, fixing, securing and / or locking.

[0009] 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.

[0010] 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, particularly via the (lockable) shaft, such that mechanical power can be transferred between the first and second sub-transmission parts.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 the first and second sub-gearbox parts, and / or no power can be exchanged between the 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.

[0011] 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 set to rotate freely.

[0012] Advantageously, this allows, in one embodiment, for the transmission arrangement to be used more flexibly, 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 equipped with this transmission arrangement. Advantageously, this allows, in one embodiment, a superposition with stepless speed adjustment to be realized, particularly using the first sub-transmission part and / or the second sub-transmission part. Furthermore, this allows, in one embodiment, a scalable transmission arrangement to be realized. Advantageously, this also allows, in one embodiment, the number of gears to be reduced, particularly compared to superposition transmissions without stepless 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 section) can advantageously be operated at, at least substantially, the same or constant speed, and furthermore, fuel can be saved. Advantageously, in one embodiment, a scalable transmission for vehicles, especially tracked vehicles, can be provided more easily, and furthermore, scalable to the size or weight of the vehicle and thus in versions for comparatively heavy vehicles. Advantageously, in one embodiment, it can be made possible for the directions of the outputs or the output speeds to be different.are, in particular 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 may be smaller than or equal to the track width, and in particular turning on the spot (pivot) may be enabled or is possible.

[0013] In one embodiment, the operative connection between the first gear section and the second gear section has a selectable and / or switchable transmission ratio. Alternatively or additionally, in one embodiment, a first connection of the third gear section and / or a second connection of the third gear section 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 switchably geared, and in particular the connection is designed for this purpose, furthermore in particular having two or at least two selectable and / or switchable transmission ratios.

[0014] 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 increase the efficiency of the arrangement or to provide a more efficient arrangement.

[0015] 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. According to the invention, 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.

[0016] Advantageously, this allows, in one embodiment, a translation through the planetary gear to be provided for the first and / or second operating state, in particular power to be branched or summed more easily, especially as required.

[0017] 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.

[0018] 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.

[0019] 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).

[0020] Advantageously, this allows, in one design, for braking to be carried out more reliably and / or efficiently.

[0021] 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.

[0022] 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.

[0023] 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 engine, a gas turbine, or the like, or is designed as such.

[0024] 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.

[0025] 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.

[0026] 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.

[0027] 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, with "sub-" being introduced solely for the purpose of differentiation, in particular without limiting its generality.

[0028] Advantageously, in one embodiment, this allows energy to be supplied from the generator-driven first electric machine to the motor-driven second electric machine(s) and / or the third electric machine. Advantageously, in one embodiment, this allows the first electric machine to supply electrical power to the second electric machine and / or the third electric machine when the first transmission part is mechanically separated from the third transmission part, particularly by the fixed second transmission part. This allows the vehicle to remain in this operating state for a longer period, especially when the internal combustion engine is operating in a range that is, at least substantially, optimal for the engine.

[0029] 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).

[0030] 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).

[0031] 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, particularly the third transmission section (is or is purely electrically operated), and furthermore, particularly the second electric machine and / or the third electric machine, especially by means of a battery, accumulator, fuel cell, 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 gearbox arrangement and / or the drive arrangement is designed or configured for the third sub-operating state.

[0032] Advantageously, in one embodiment, this allows the internal combustion engine to be started with a time delay, so that the vehicle can enter the first sub-operating state at a later time, and thus, in one embodiment, the second and / or third electric machines can be driven by the generator-driven first electric machine, wherein the first electric machine (in this first sub-operating state) is driven by the internal combustion engine, in particular to provide electrical energy for the second and / or third electric machines. Advantageously, in one embodiment, this also allows the vehicle to start more quickly, in particular, the internal combustion engine to be started while driving.This can be done, in particular to supply additional electrical energy or to maintain a (high / higher) level of electrical energy. In one implementation, this can increase the safety of the vehicle, especially if it is a military vehicle (faster to take cover or faster to leave cover), particularly without having to wait for the internal combustion engine to start.

[0033] 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.

[0034] Advantageously, in one version, this makes it possible for a vehicle powered by the drive arrangement to perform a faster sprint.

[0035] 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.

[0036] Advantageously, this allows the number of gears in the transmission or transmission assembly to be reduced compared to stepped steering transmissions. Advantageously, in one embodiment, this enables the installation space of the transmission assembly to be, at least substantially, equal to or smaller than that of a (purely) power-split transmission. Furthermore, advantageously, in one embodiment, this enables a transmission assembly 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.The approximation is limited (only) by the operating limit(s) of the electric machine(s) used, and the electric machine(s) can be operated in overload mode, particularly temporarily, to (further) approximate the tractive force hyperbola. In one embodiment, an electric machine, in particular the first electric machine, the second electric machine, and / or the third electric machine, is designed for overload operation.

[0037] 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.

[0038] Advantageously, in one embodiment, this allows the internal combustion engine, particularly due to the continuously variable design of the transmission arrangement, to operate at, or can operate 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 a continuously variable, power-split hybrid system to be provided if the internal combustion engine powers the second and / or third electric machines via the first electric machine.

[0039] 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 driving 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.

[0040] Advantageously, this allows, in one embodiment, for an energy storage device to be integrated, particularly depending on the vehicle's use, whereby this device is not, in particular, essential for the vehicle's operation and / or driving function. Advantageously, this allows, in one embodiment, for the drive system to be boosted using the diesel engine.

[0041] 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.

[0042] Advantageously, this allows, in one version, a fan or the like to be operated using the auxiliary drive.

[0043] 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.

[0044] 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.

[0045] 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 a substantial 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.

[0046] Advantageously, in one embodiment, this enables the drive arrangement and / or a vehicle comprising the drive arrangement to be operated more quietly and / or to operate (at least essentially) purely electrically, particularly without relying on starting the internal combustion engine (in the first operating state of the transmission arrangement). Advantageously, in one embodiment, this enables the drive arrangement to provide drive or propulsion (for forward or reverse travel of the vehicle) without delay, at least essentially. In one embodiment, this enables the drive arrangement to provide a comparatively high torque, particularly if the ring gear of the power summation and / or power split can be supported on the fixed second transmission part and, in one embodiment, an output is provided via a...the planetary carrier.

[0047] 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, in one embodiment, can be in or be operated in a first operating state, particularly with the second gear section locked, or in a first sub-operating state.

[0048] 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 over longer periods, at an operating point that is at least substantially optimal for the engine, so that, in one embodiment, a high level of available electrical power is provided, particularly over longer periods, compared to other operating modes. Advantageously, this allows, in one embodiment, for an internal combustion engine to be operated for a longer period, particularly through (longer) operation at, at least substantially, the engine's optimal operating point.

[0049] 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.

[0050] 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.

[0051] In one version, this allows the internal combustion engine to be operated more efficiently.

[0052] 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.

[0053] Advantageously, this allows a scalable transmission arrangement or scalable drive arrangement to be realized in one embodiment; in particular, the transmission arrangement and / or the drive arrangement is easier to scale and / or adapt to different vehicle types or vehicle weights.

[0054] 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.

[0055] 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.

[0056] Advantageously, this allows the drive arrangement to be operated more efficiently in one design.

[0057] 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 transmission ratio with two stages, in particular with 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 and second electric machines or the first and third electric machines. In another embodiment, the switching point, in particular the gear ratio in the first sub-gearbox and / or the second sub-gearbox, is additionally or alternatively dependent on a speed limit of the second and / or third electric machine. In another embodiment, the switching point, in particular the gear ratio from the first to the second gearbox, 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.

[0058] 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.

[0059] 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 operating the drive arrangement, in particular at least one control and / or regulation unit.

[0060] 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.

[0061] 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.

[0062] In one embodiment, one or more, in particular all, steps of the procedure are fully or partially computer-implemented, or one or more, in particular all, steps of the procedure are fully or partially automated, in particular by the system or its means.

[0063] Further advantages and features will become apparent from the dependent claims and the exemplary embodiments. These are shown, in part schematically: Fig. 1: a gear arrangement and a drive arrangement according to an embodiment in a first operating state; Fig. 2: the gear arrangement and the drive arrangement of Fig. 1 in a second operating state; Fig. 3: a gear arrangement and a drive arrangement according to a further embodiment of the present invention in a first operating state; Fig. 4: the gearbox arrangement and the drive arrangement of Fig. 3 in a second operating state; and Fig. 5: a block diagram of a method for operating a drive arrangement.

[0064] Fig. Figure 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 is usable in embodiments for providing a continuously variable power-split transmission, in particular for a vehicle, furthermore in particular for a wheeled vehicle, such as a Boxer with, for example, a 4x4 or 8x8 or the like; or a tracked vehicle, furthermore in particular a military vehicle or military tracked vehicle. Fig. Figure 1 schematically shows a first gear part I of the gear arrangement, which has a connection for a drive and a connection for a first electric machine. Fig. Figure 1 further schematically shows a second gear part II, which is designed to be lockable. The in Fig. Figure 1 schematically shows a shaft that can be locked in place by means of a brake. Furthermore, it shows Fig. 1. Schematically, a third transmission part III, which has an output, here or in one embodiment a first sub-transmission part IIIa and a second sub-transmission part IIIb, in particular on opposite sides of the transmission arrangement, in one embodiment for a drive side on the left side in the direction of travel of a vehicle or tracked vehicle and for a drive side on the right side in the direction of travel of the vehicle or tracked vehicle and / or chain (without limiting the generality). The third transmission part III shows in Fig. 1. A planetary gear unit whose ring gear is operatively connected to the second gear unit II, or a left-hand planetary gear unit, in particular of the first sub-gear unit IIIa, and a right-hand planetary gear unit, in particular of the second sub-gear unit IIIb, whose ring gears are each operatively connected to, mesh with, or coupled to the second gear unit II. Sub-gear units IIIa and IIIb are connected or connectable by the second gear unit II, in particular when the second gear unit II is disengaged, released, or adjusted (i.e., not locked or fixed), so that mechanical power can be transferred between sub-gear unit IIIa and sub-gear unit IIIb.Gearbox part II is lockable, as described herein, which means that, in particular, no mechanical power can be supplied to or exchanged between sub-gearbox parts IIIa and IIIb, and especially that power cannot flow from the (left) first sub-gearbox part IIIa to the (right) second sub-gearbox part IIIb, particularly when the second gearbox part II is mechanically locked. In the locked state, gearbox part III can support torque, particularly at the locked second gearbox part II, and thereby, in one embodiment, generate higher torques at the output, especially at the output of the first sub-gearbox part IIIa and / or at the output of the second sub-gearbox part IIIb.

[0065] 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, particularly by means of a switchable clutch (not shown). Furthermore, locking the second transmission part II also locks the ring gear of the planetary gear set(s). Advantageously, the resulting gear ratio can be used, in one embodiment, for reverse travel, relatively slow forward travel, and / or purely electric driving of the vehicle; in particular, the gear ratio is designed for this purpose. In one embodiment, an internal combustion engine B can be operated in the first transmission part I in this first operating state.be, in particular such that the power of the internal combustion engine B is driven by an electric machine 1 in the first transmission section I (at the second connection of the first transmission section I), in particular as a generator, so that the first electric machine 1 provides or can provide electrical power which, in one embodiment, can be used or is used by the electric machine(s) in the third transmission section III, in particular the second electric machine 2 and / or the third electric machine 3, and in particular is supplied or can be 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.can be, in particular can be disconnected, especially in such a way that the internal combustion engine B and / or the first electric machine 1 are, in particular freely, operable or can be operated. The freehand strokes in . Fig. Figure 1, and especially the other figures, represent mechanical connections, while the dashed freehand lines represent, in particular, temporary or optional / additional electrical connections. Fig. 1 and Fig. 3 is the first operating state shown schematically, in which Fig. 2 and Fig. 4 the second operating state.

[0066] In the case of a torque-transmitting second transmission section II, 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 supplemented by the torque of the drive(s) of the first transmission section I. In one embodiment, in the second operating state, the internal combustion engine B can transmit torque to the third transmission section III, and the first electric machine 1 of the first transmission section I can be operated as a generator with a portion of the torque, in particular such that the electrical power generated in this way can be transmitted to the electric machine(s) 2, 3 of the third transmission section III.

[0067] 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 in Fig. 1 shown).

[0068] In Fig. 1 (as well as the further Fig. Figures 2 to 4 also show a brake arranged on the planet carrier of the planetary gear.

[0069] Fig. Figure 2 schematically shows a second operating state of the gearbox arrangement or the drive arrangement. Fig. 1. Unlike the 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 the second electric machine 2 and / or the third electric machine 3 with current.

[0070] The in Fig. The arrangement shown in section 3 differs from the arrangements of the Fig. 1 and Fig. 2. This is achieved by providing, or encompassing, various gear ratios between the electric machines 2, 3 and the power summation unit or the planetary gear set in the third gear set III. Furthermore, another selectable gear ratio between the first gear set I and the second gear set II is schematically illustrated.

[0071] 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 the third gear part III, particularly based on an operational requirement.

[0072] Fig. Figure 4 shows the gear arrangement or drive arrangement of the 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 may, in one version, 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 in the second operating state in Fig. As shown in Figure 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 can be supplied with current from a generator-operated first electric machine 1.

[0073] Fig.Figure 5 schematically shows a block diagram of one implementation 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 implementation is also based on the determined operating requirement and / or an operating state of the arrangement. It is also shown that the method can be, and is, repeated continuously, semi-continuously, and / or intermittently.

[0074] In the present disclosure, "has an X" does not generally 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 embodiments were explained in the preceding description, 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 limit the scope of protection, applications, or structure in any way.Rather, the preceding description provides the skilled person with a guide 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 leaving the scope of protection as defined by the claims and these equivalent combinations of features. Reference symbol list 1 first electric machine 2 second electric machine 3 third electric machine I first gearbox part II second gearbox part III third gearbox part Illa first sub-gearbox part (of the third gearbox part) IIIb second sub-gearbox part (of the third gearbox part) B Internal combustion engine S10 Determining an operational requirement S20 Operation S30 Shifting

Claims

[1] Gear arrangement 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 and wherein the second transmission part (II) is mechanically connectable to the first transmission part (I); and - a third gear section (III, IIIa and IIIb) comprising a first sub-gear section (IIIa) with a first connection for a second electric machine (2) and a second sub-gear section (IIIb) with a second connection for a third electric machine (3), wherein the first sub-gear section (IIIa) and the second sub-gear section (IIIb) are operable independently of each other, wherein the third gear section (III) is mechanically connected to the second gear section (II); and wherein the third gear section (III) has an output of the gear arrangement; wherein the first connection of the third gear section (III) and the second connection of the third gear section (III) act on a sun gear of a planetary gear. [2] Gear arrangement according to the preceding claim, characterized bya first operating state in which the second gear part (II) is locked, such that 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) is set so that mechanical power can be transferred 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 by , that an operative connection of the first transmission part (I) with the second transmission part (II) has a selectable and / or switchable transmission ratio; 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 by, that 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 by , 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 by , 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 gear arrangement according to any one of the preceding claims, characterized by, that an internal combustion engine (B) is arranged at the first connection of the first transmission part (I) and wherein a first electric machine (1) is arranged at the second connection of the first transmission part and wherein a second electric machine (2) is arranged at the first connection of the third transmission part (III) and wherein a third electric machine (3) is arranged at the second connection of the third transmission part (III). [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) is operated as a generator and is configured to be driven by the internal combustion engine (B); and / or wherein the first electric machine (1) of the first transmission part (I) is configured 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 set up to start the internal combustion engine (B). [10] Drive arrangement according to any 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) to the third transmission part (III). [11] Drive arrangement according to any one of the preceding claims 7 to 10, characterized by , that the first electric machine (1) in the first sub-operating state of the first operating state or in generator operation, is designed to drive the second electric machine (2) and the third electric machine (3) and / or characterized by, 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. [13] Method according to the preceding claim, characterized by, 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 functional 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 any one of claims 7 to 11 which is set up and / or comprises a method according to any 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 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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