WO2021099034A1 - Essieu moteur électrique modulaire - Google Patents

Essieu moteur électrique modulaire Download PDF

Info

Publication number
WO2021099034A1
WO2021099034A1 PCT/EP2020/078929 EP2020078929W WO2021099034A1 WO 2021099034 A1 WO2021099034 A1 WO 2021099034A1 EP 2020078929 W EP2020078929 W EP 2020078929W WO 2021099034 A1 WO2021099034 A1 WO 2021099034A1
Authority
WO
WIPO (PCT)
Prior art keywords
housing
coolant
machine
transmission
electronics
Prior art date
Application number
PCT/EP2020/078929
Other languages
German (de)
English (en)
Inventor
Philipp Breinlinger
Andreas Wuensch
Original Assignee
Robert Bosch Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Publication of WO2021099034A1 publication Critical patent/WO2021099034A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/30—Structural association with control circuits or drive circuits
    • H02K11/33—Drive circuits, e.g. power electronics
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/15—Mounting arrangements for bearing-shields or end plates
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/006—Structural association of a motor or generator with the drive train of a motor vehicle
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
    • H02K2213/12—Machines characterised by the modularity of some components

Definitions

  • the invention relates to a modular axle drive, in particular a modular electric axle drive, for vehicles, a manufacturing method for a modular axle drive and an assembly method for a modular axle drive in a vehicle.
  • DE 102017 103397 A1 describes an axle drive unit for an electrically drivable motor vehicle, the axle drive unit to have at least one electric motor and a transmission in such a way that the electric motor and the transmission form a structural unit.
  • the structural unit should have a common housing.
  • DE 102013 222 090 A1 discloses a drive set consisting of an electric motor with power electronics and a transmission.
  • the invention creates a modular axle drive, in particular a modular electric axle drive, for vehicles with the features of independent claim 1 and a vehicle, a manufacturing method for a modular axle drive and an assembly method of a modular axle drive in a vehicle with the features of the further independent claims.
  • the present invention creates possibilities for easily integrating at least one electrical machine and a transmission interacting with the electrical machine as well as power electronics controlling the electrical machine to form a modular (electrical) axle drive with a common coolant circuit.
  • the “modular housing concept” provided by means of the present invention allows a modular integration of the electrical machine, the transmission and the power electronics in the modular axle drive with a common coolant circuit, which can be easily mounted on and / or in a vehicle, in particular a motor vehicle.
  • the modular integration and design of the common coolant circuit takes place only by means of a suitable design of coolant channels in the housings of the electrical machine, the transmission and the power electronics.
  • the “modular housing concept” enables a large number of design freedom when designing the advantageous modular axle drive.
  • the power of the modular axle drive formed from at least the electrical machine, the transmission and the power electronics can be easily scaled in an application-specific manner and can be customized relatively easily.
  • the electric axle drive implemented by means of the present invention is suitable both for a low power class with operating voltages of approx. 260 V [volts] to 480 V and for a high power class with operating voltages of approx. 480 V to 850 V.
  • the electric axle drive according to the invention can therefore also be used to carry out special performance applications.
  • the electrical machine has a machine housing that extends in the axial direction.
  • the machine housing has at least one machine coolant channel that extends along a portion of the machine housing.
  • the transmission has a transmission housing.
  • the gear housing has at least one Transmission coolant channel extending along a portion of the transmission housing.
  • the power electronics have an electronics housing.
  • the electronics housing has at least one electronics coolant channel that extends along a portion of the electronics housing.
  • the machine housing is mechanically detachably connected to the transmission housing on its drive side which is at the front in the axial direction.
  • the electronics housing is mechanically detachably connected to the gear housing and the machine housing.
  • the electronics coolant channel is fluidly connected to a coolant inlet.
  • the machine coolant channel and additionally or alternatively the transmission coolant channel are connected in a fluid-conducting manner to a coolant drain.
  • the electronics coolant duct, the machine coolant duct and the transmission coolant duct are fluidly connected in such a way that coolant can flow from the coolant inlet via the electronics coolant duct, the machine coolant duct and the transmission coolant duct to the coolant outlet.
  • the machine coolant channel, the transmission coolant channel and the electronics coolant channel form a common coolant circuit which can be connected to a coolant guide or to a coolant reservoir of a vehicle via the coolant inlet and the coolant outlet.
  • the power electronics and then the electrical machine and the transmission can be cooled via the common coolant circuit.
  • At least one connecting element can be arranged or designed on the electronics housing or the motor housing or the transmission in such a way that the electronics coolant channel is connected in a fluid-conducting manner to the machine coolant channel or the transmission coolant channel via the at least one connecting element.
  • a three-way fluid coupling e.g.
  • a T-piece can be arranged on the electronics housing, which connects the electronics coolant channel with the engine coolant channel and the transmission coolant channel, and another three-way fluid coupling (e.g. a T-piece) can be arranged upstream of the coolant drain be that fluidly connects the engine coolant duct and the transmission coolant duct to the coolant drain.
  • a T-piece can be arranged upstream of the coolant drain be that fluidly connects the engine coolant duct and the transmission coolant duct to the coolant drain.
  • the modular electric axle drive with the common coolant circuit provides an effective and customizable according to the performance class / Ready-to-assemble cooling of all loaded components ready. Overheating and premature damage to both the electrical machine and the power electronics as well as the transmission can thus be prevented. Nevertheless, the components of the modular axle drive can be quickly and easily connected to one another and scaled depending on the area of application.
  • the machine housing is open on its drive side.
  • the gear housing covers the open drive side, preferably at least partially and particularly preferably completely.
  • the gear housing thus serves as a cover for the open drive side of the machine housing, which means that a separate cover for the machine housing can be dispensed with. This reduces the material used, the number of elements, the total weight and the time required to assemble the modular final drive.
  • the machine housing is open on its rear side, which is located at the rear in the axial direction, and comprises a cover.
  • the cover is mechanically detachably connected to the machine housing on its open rear side.
  • the lid covers the open rear side, preferably at least partially and particularly preferably completely.
  • Electronics housing releasably mechanically connected to the machine housing on its cover.
  • the cover of the machine housing of the present invention both facilitates the integration of the electrical machine and the interacting gearbox and improves the sealing of the machine housing from the external environment.
  • the cover of the machine housing ensures simple and quick access to the electrical machine and also provides the mechanical connection between the electronics housing and the machine housing at the same time.
  • the machine coolant channel extends into the cover.
  • the fluid-conducting connection between the electronics coolant channel and the machine coolant channel can preferably take place in the area of the cover.
  • a deflection of the coolant between several machine coolant channels in the cover can preferably be provided.
  • the electrical machine can be cooled over a particularly large area through the coolant channel extending into the cover.
  • the machine housing can be manufactured in a particularly simple manner, since no deflections (only essentially straight machine coolant channels) need to be provided in the machine housing.
  • the machine coolant channel and the transmission coolant channel are designed in such a way that coolant can flow back and forth several times between the machine housing and the transmission housing before it reaches the coolant drain.
  • the gear housing and the machine housing each include a plurality of coolant channels that are alternately connected to one another in a fluid-conducting manner.
  • the coolant can be in the transmission housing and preferably, if present, in the Cover are deflected so that coolant can flow from a machine coolant channel into a fluid-conducting connected transmission coolant channel, deflected in this and then flow into a further machine coolant channel connected to the transmission coolant channel, in order then to be in the machine housing or in the cover, up to which the machine coolant channel extends, to be deflected and then to be able to flow via the machine coolant channel into a further fluid-conducting connected transmission coolant channel. This can be repeated several times until the coolant can flow out at the coolant outflow.
  • the gear housing comprises a first end shield for the electrical machine.
  • a machine shaft of the electrical machine can be rotatably mounted in the first end shield.
  • the integration of the first end shield in the gear housing reduces the number of elements and simplifies the assembly of the modular final drive.
  • the cover comprises a second end plate for the electrical machine.
  • the machine shaft of the electrical machine can be rotatably mounted in the second end shield.
  • the integration of the second end shield in the cover reduces the number of elements and simplifies the assembly of the modular final drive.
  • the modular axle drive further comprises an intermediate shaft which is mounted in the gear housing and the cover.
  • the intermediate shaft is at a transmission output of the transmission tied up.
  • the intermediate shaft is preferably rotatably mounted in the first bearing plate and additionally or alternatively in the second bearing plate.
  • the modular axle drive further comprises installation adapters.
  • the installation adapters are designed to mechanically connect the modular final drive to a frame of a vehicle.
  • the gear housing and the cover comprise screw-on points for the installation adapters, at which the installation adapters are mechanically connected to the transmission housing and the cover in a correspondingly releasable manner via connecting means.
  • the screw-on points have a predefined position and arrangement which are the same for all configurations of the modular axle drive or for all machine housings or all covers and all gear housings. Only the installation adapters are adapted to the respective frame of the vehicle.
  • the modular axle drive further comprises a heat exchanger.
  • the heat exchanger is mechanically releasably connected to the machine housing or the gear housing.
  • a water circuit of the heat exchanger is fluidly connected to the coolant drain.
  • an oil circuit of the heat exchanger is connected to the gear unit (e.g. oil bath). The water cycle of the Be connectable heat exchanger to the coolant guide or the coolant reservoir of the vehicle.
  • a cooling output of the heat exchanger can thus be adapted individually with respect to a desired cooling of the transmission in a manner different from a cooling output of the common coolant system.
  • the electric axle drive can also have a parking lock arranged in or on the machine housing or the transmission housing.
  • the parking lock can be mounted on the motor vehicle to be trained with it by means of a comparatively low expenditure of work only by mounting the electric axle drive.
  • a vehicle comprises at least one modular final drive according to the first aspect of the invention, a coolant reservoir, at least one drive axle and at least one driven wheel.
  • the coolant reservoir is connected to the coolant inlet and either the coolant outlet or the water circuit of the heat exchanger of the at least one modular axle drive connected in a fluid-conducting manner.
  • the at least one drive axle is non-rotatably connected to a gear output of the gearbox of the at least one modular axle drive.
  • the at least one driven wheel is non-rotatably connected to the at least one drive axle.
  • a manufacturing method for a modular axle drive according to the first aspect of the invention comprises the steps:
  • this further includes the step:
  • this further includes the step:
  • an assembly method of a modular final drive according to the first aspect of the invention in a vehicle according to the second aspect of the invention comprises the steps:
  • FIGS. 2A to 2D show schematic representations of various examples of common coolant circuits of the modular axle drive
  • 3A to 3B are schematic representations of a second
  • FIGS. 4A to 4B show schematic representations of two different designs of the modular axle drive
  • FIG. 5 shows a schematic representation of an exemplary embodiment of the vehicle with the modular axle drive
  • FIG. 6 shows a flow chart for explaining an exemplary embodiment of the production method for a modular axle drive
  • Embodiment of the assembly method of a modular axle drive in a vehicle Embodiment of the assembly method of a modular axle drive in a vehicle.
  • the expression mechanically connected is understood to mean that the elements connected in this way are connected to one another by a form fit and / or force fit and / or material connection, with no translational or rotational movement of the elements relative to one another being possible.
  • the expression non-rotatably or non-rotatably connected is understood to mean that the elements connected in this way can at least not move rotationally against one another (but only with one another) (e.g. shaft-hub connection).
  • the expression connected in a fluid-conducting manner is understood to mean that a fluid (for example a coolant such as cooling water) can flow between two elements connected in this way without significant losses due to leaks.
  • Figs. 1A to ID schematically illustrated modular axle drive 1 can be mounted on and / or in a vehicle or motor vehicle (motor vehicle). It should be noted that the usability of the modular final drive is not restricted to any specific vehicle type.
  • the modular axle drive 1 comprises at least one electrical machine 10, a transmission 20 interacting with the electrical machine 10, and power electronics 30 that control the electrical machine 10.
  • the electrical machine can be an electric motor.
  • the transmission 20 may include a differential.
  • the transmission 20 can thus be understood in particular as a differential transmission.
  • the electrical machine 10 has a machine housing 11 on and / or in which one or more machine coolant channels 12 run along a section of the machine housing 11.
  • the transmission 20 has a transmission housing 21 on and / or in which one or more transmission coolant channels 22 run along a section of the transmission housing 21.
  • the power electronics 30 have an electronics housing 31 on and / or in which one or more electronics coolant channels 32 run along a section of the electronics housing 31.
  • the machine housing 11 has an open drive side 13 at the front in the axial direction and an open rear 14 at the rear ).
  • the machine housing 11 is detachably mechanically connected to the gear housing 21 on the open drive side 13 (e.g. screw connection).
  • the open drive side 13 is completely covered by the gear housing 21.
  • the machine housing 11 is mechanically detachably connected to its cover 15 on the open rear side 14 (e.g. screw connection).
  • the open rear side 14 is completely covered by the cover 15.
  • the electrical machine 10 also has a machine shaft 16, which is non-rotatably connected to a rotor of the electrical machine.
  • a torque or rotational movement generated by the electric machine 10 via a stator and the rotor of the electric machine 10 is introduced via the machine shaft 16 into the transmission 20 and there correspondingly translated to a transmission output of the transmission 20.
  • the machine shaft 16 is rotatably mounted in the area of the drive side 13 in a first end shield encompassed by the gear housing 21 and rotatably mounted in a second end shield encompassed by the cover 15 in the area of the rear side 14.
  • the first and the second end shield each include bearings such as roller bearings (for example ball bearings, cylindrical roller bearings or needle bearings).
  • the cover 15 also has a first electrical interface 17 (for example in the form of at least one plug and / or at least one socket).
  • the electronics housing 31 has a second electrical interface 33 which is designed to be complementary to the first electrical interface 17 (e.g. corresponding sockets and / or plugs).
  • the electronics housing 31 is with the cover 15 and the gear housing 21 releasably mechanically connected (e.g.
  • the first electrical interface 17 and the second electrical interface 33 are electrically connected to one another, whereby an electrical connection is established between the power electronics 30 and the electrical machine, so that the power electronics 30 can control the electrical machine and supply it with electrical energy.
  • the power electronics 30 are preferably arranged close to the electrical machine 10, in particular on the outside of the machine housing 11.
  • the cover 15 of the machine housing 11 and the gear cover of the gear housing 21 enable a particularly simple and quick assembly of the electric machine 10 and the gear 20 interacting with it.
  • the cover 15 and the gear cover are preferably designed in such a way that components of the electric machine 10 when the cover 15 is removed Due to the open rear side and components of the gearbox 20 with the gearbox cover removed, they can be installed or removed or serviced directly in the gearbox housing body without having to separate the machine housing 11 from the gearbox housing 21.
  • This configuration of the modular axle drive 1 with cover 15 and gear cover considerably reduces the amount of work to be done for the common integration of at least the electrical machine 10 and the interacting gear 20.
  • the power electronics 30 are equipped with a separate electronics housing 31.
  • the electronics housing 31 can for example have a power electronics receiving part (pot) and a cover part, a power electronics receiving volume of the electronics housing 31 being framed by the power electronics receiving part and being sealable / sealed by means of the cover part. All other components of the power electronics 30 can thus be completely surrounded by their own electronics housing 31.
  • the arrangement of the power electronics 30 of the modular axle drive 1 in its separate electronics housing 31 thus enables the power electronics 30 to be transported as a closed and sealed unit, as a result of which a risk of damage to the power electronics 30 during transport is significantly reduced.
  • the arrangement of the power electronics 30 in the separate electronics housing 31 makes it easier to repair or replace the power electronics 30, in particular without removing the motor housing 11 and / or the transmission housing 21 from the vehicle.
  • the power electronics 30 can be electrically connected to electronics or a control unit of the vehicle via lines 34 without any problems.
  • the electronics housing 31 can be fastened, for example, via several screws or bolts to the machine housing 11 or cover 15 formed with corresponding screw receiving openings and to the gear housing formed with corresponding screw receiving openings.
  • the machine coolant channels 12 can be formed, for example, by several essentially straight coolant lines along the machine housing 11 and by deflections formed in the cover 15 which connect the essentially straight coolant lines along the machine housing 11 in pairs. Two of the essentially straight coolant lines along the machine housing 11 and one of the deflections formed in the cover 15 can be arranged and designed in such a way that their openings are pressed tightly against one another when the cover 15 is mechanically connected to the machine housing 11.
  • additional sealants e.g. O-rings
  • O-rings can be used to improve the tightness.
  • the transmission coolant channels 22 can be designed as deflections and connect two of the essentially straight coolant lines along the machine housing 11 in such a way that coolant can flow multiple times from the cover 15 along the machine housing 11 into the transmission housing 21 and back again.
  • the transmission coolant channels 22 are pressed tightly onto the machine coolant channels 12 or the essentially straight coolant lines along the machine housing 11 when the transmission housing 21 is mechanically connected to the machine housing 11.
  • additional sealants e.g. O-rings
  • the machine coolant channels 12 and the transmission coolant channels 22 form a meandering coolant channel in which the coolant can flow back and forth several times between the machine housing 11 and the transmission housing 21.
  • a spiral machine coolant channel 11 with only one fluid-conducting connection to the transmission coolant channel 21 can be formed on or in the machine housing 11.
  • the one or more electronics coolant channels 32 can be connected to the machine coolant channel 12 and additionally or alternatively to the transmission coolant channel 22 via a fluid-conducting connection. As in Fig.
  • an electronics coolant channel 32 can be connected in a fluid-conducting manner to the machine coolant channel 12 via a connecting element 34.
  • the connecting element 34 is arranged and designed (e.g. as a socket) on the machine housing 11 or the cover 15 or the electronics housing 31 in such a way that by simply plugging or pressing the electronics housing 31 onto the machine housing 11 or onto the cover 15, the electronics coolant channel 32 is connected to the machine coolant channel 12 in a fluid-conducting manner.
  • hoses, pipes or other separate lines outside the electronics housing 31 and the machine housing 11 / cover 15 or the transmission housing 21 for the fluid-conducting connection of the respective coolant channels can be saved.
  • a seal on the at least one connecting element 34 is ensured.
  • the at least one connecting element 34 is preferably designed to be pluggable and detachable, so that the electronics housing 31 is still detached from the machine housing 11 or the gear housing 21 and possibly can be exchanged.
  • the common coolant circuit formed in this way comprising the at least one electronics coolant channel 32, the at least one machine coolant channel 12 and the at least one machine coolant channel 22 thus facilitates the assembly of the modular axle drive despite the reliable coolability of at least the electric drive machine 10, the transmission 20 and the power electronics 30.
  • the common coolant circuit that is formed is preferably designed such that a coolant such as cooling water flowing through the common coolant circuit forms a water jacket that cools the power electronics 30, the electrical machine 10 and the transmission 20.
  • a coolant such as cooling water flowing through the common coolant circuit forms a water jacket that cools the power electronics 30, the electrical machine 10 and the transmission 20.
  • a “water jacket” that at least partially, in particular completely, encloses electrical machine 10 is formed.
  • the common coolant circuit can form a spiral “water jacket”, an axially meandering “water jacket” or a “water jacket” running parallel in the circumferential direction for the electrical machine 10 and / or the transmission 20.
  • the examples described here for guiding the cooling medium flowing through the common coolant circuit each ensure reliable cooling of the electrical machine 10 and the transmission 20 as well as the power electronics 30.
  • the modular axle drive 1 can optionally also have a heat exchanger 40, which can be used to cool oil inside the transmission 20.
  • a water circuit of the heat exchanger 40 is preferably connected to one end of the common coolant circuit, which is formed from the one or more electronics coolant channels 32, machine coolant channels 11 and transmission coolant channels 21. After the coolant (for example cooling water) has passed the water circuit of the heat exchanger 40, it can be passed into the coolant reservoir of the vehicle. Furthermore, an oil circuit of the heat exchanger 40 is connected to the transmission 20.
  • the Heat exchanger 40 can thus have oil / transmission oil flowing through it on the transmission side and, on the opposite side, be supplied with a coolant provided by the common coolant circuit of the modular final drive 1, so that heat can be transferred from the warmer oil / transmission oil to the coolant or cold oil is also heated, which has a positive effect on the efficiency of the transmission.
  • the heat exchanger 40 can be designed with its own heat exchanger coolant inlet, which is fluidly connected to the coolant outlet of the common coolant circuit, and its own heat exchanger coolant outlet, so that the heat exchanger 40 can be easily operated using at least one hose, at least one pipe and / or at least one hydraulic connector can be connected to the coolant reservoir of the vehicle.
  • the heat exchanger 40 is preferably designed in such a way that different performance levels of its cooling capacity can be selected for a basic type of the heat exchanger 40, for example by varying the number of plates of the heat exchanger 40 and / or a variation of a dimension of the plates of the heat exchanger 40 Cooling of the transmission 20 takes place both a heat transfer from the transmission 20 to coolant in the transmission coolant ducts 22 and a heat transfer from the transmission 20 to oil, with the oil being cooled by the coolant in the heat exchanger 40 and the coolant itself in a separate heat exchanger of the vehicle.
  • the electric axle drive can also have an intermediate shaft (not shown) which is connected to the transmission output of the transmission 20.
  • an intermediate shaft (not shown) which is connected to the transmission output of the transmission 20.
  • two drive shafts of the same length can be implemented in the vehicle equipped with the modular axle drive 1. In this way, the more frequent use of the same parts can reduce manufacturing costs.
  • tolerance problems which conventionally occur when such a shaft is connected to the transmission 20 can also be reduced.
  • the intermediate shaft due to the symmetrical drive shafts, driving dynamic properties of the modular axle drive equipped vehicle can be improved.
  • the intermediate shaft is preferably rotatably supported in the first end shield and the second end shield, analogously to the machine shaft 16 of the electrical machine 10, via roller bearings.
  • the modular axle drive formed with the intermediate shaft can thus be easily mounted on and / or in the vehicle.
  • a parking lock (not shown) can optionally be integrated in the modular axle drive 1.
  • the parking lock can also be positioned laterally to the transmission 20 and the electrical machine 10 or also horizontally above or below the transmission 20 or the electrical machine 10.
  • FIGS. 2A to 2D show schematic representations of various examples of common coolant circuits of the modular axle drive 1. All the common coolant circuits shown can be connected to a cooling water duct (coolant lines, heat exchanger and coolant reservoir) of the vehicle equipped with the modular axle drive.
  • the cooling water supply of the vehicle can also be understood to mean a cooling system of the vehicle.
  • the cooling water inlets and the cooling water outlets of the illustrated common cooling water circuits of the modular final drive 1 can each be connected to the cooling water duct of the vehicle via a hose, a pipe and / or via a hydraulic connector.
  • Coolant that can be provided from a coolant reservoir of a vehicle can be as shown in Figs. 2A to 2D are initially guided into the electronics coolant channels 32 of the electronics housing 31 for cooling the power electronics 30. This is due to the fact that the electronic components of the power electronics 30 react particularly sensitively to overheating and therefore have to be cooled with the coolant that is as cold as possible in order to reliably avoid overheating.
  • a part can also be diverted directly to the heat exchanger 40, for example via a T-piece, in order to To cool oil in the oil circuit of the heat exchanger 40 particularly effectively.
  • the coolant can also only be conducted into the heat exchanger 40 after it has passed through the common coolant circuit through the power electronics 30, the electrical machine 10 and the transmission 20.
  • the coolant is either, as shown in FIGS. 2A and 2B, into the machine coolant channels 12 of the machine housing 11 of the electrical machine 10 or, as shown in FIGS. 2C and 2D, fed into the transmission coolant channels 22 of the transmission housing 21 of the transmission 20.
  • the coolant flows through the common coolant circuit and the heat exchanger 40 and has cooled the respective components or the oil by absorbing heat, it can be directed back into the coolant reservoir of the vehicle.
  • the coolant in the coolant reservoir itself can be cooled by an integrated heat exchanger or, in front of the coolant reservoir, by a separate heat exchanger of the vehicle.
  • FIGS. 3A to 3B show schematic representations of a second exemplary embodiment of the modular axle drive 1.
  • the second exemplary embodiment largely corresponds to the first exemplary embodiment. Therefore, only differences or extensions to the previous exemplary embodiment are explained below.
  • installation adapters 50 are provided, which are mechanically detachably connected to the machine housing 11 or the cover 15 and the gear housing 21.
  • screw points 51a, 51b on the machine housing 11 or the cover 15 and screw points 52a, 52b on the gear housing 21 are provided in a predefined geometry and alignment on the modular axle drive 1 and with respect to one another.
  • the screw-on points 51a, 52a enable the installation adapters 50 to be attached perpendicular to a direction of travel of the vehicle and the screw-on points 51b, 52b enable the installation adapter 50 to be attached in the direction of travel of the vehicle.
  • the installation adapters 50 can be releasably mechanically connected to a frame of the vehicle.
  • the installation adapters 50 are shaped accordingly, depending on the installation direction and vehicle type.
  • the installation adapter 50 and the screwing points 51, 52 in a predefined geometry and alignment on the modular axle drive 1 and to each other ensure that the machine housing 11 or the cover 15 and the gear housing 21 are not redesigned for different vehicle types and installation directions, but only suitable Installation adapter 50 must be provided, whereby the cost of manufacture can be reduced.
  • FIGS. 4A to 4B show schematic representations of two different designs of the modular axle drive 1.
  • the designs largely correspond to the first and second exemplary embodiments. Therefore, only differences or extensions to the previous exemplary embodiments are explained below.
  • FIG. 4A A compact design of the modular axle drive 1 is shown in FIG. 4A.
  • the power electronics housing 31 is arranged in an axial plane of the electrical machine 10 and the transmission 20 on top of the machine housing 11 and on the transmission housing 21.
  • This design is particularly suitable for installation spaces that are short and therefore tall in the longitudinal direction of a vehicle (e.g. engine compartment, trunk).
  • FIG. 4B A flat design of the modular axle drive 1 is shown in FIG. 4B.
  • the power electronics housing 31 is offset to the rear in the axial plane of the electrical machine 10 and the transmission 20, is in alignment with the machine housing 11 and is arranged on the transmission housing 21.
  • This design is particularly suitable for long but flat installation spaces in the longitudinal direction of a vehicle (e.g. under a back seat, in the vehicle floor).
  • the machine housing 10, the cover 15, the gear housing 20 and the power electronics housing 30 can be at least partially made of aluminum, steel, magnesium, at least one plastic, such as in particular at least one plastic mixed with metal powder and / or metal particles, and / or be formed at least one electrically conductive fleece. All of the materials listed here ensure a high electrical and / or thermal conductivity of the respective housing, so that on the one hand heat from the power electronics 30, the electric machine 10 and the transmission 20 can be effectively transferred to the coolant by means of the coolant channels of the respective housing and on the other hand interference currents can be reliably transferred are shieldable.
  • a common coolant circuit is formed between the power electronics 30, the electrical machine 10 and the transmission 20. This enables a particularly efficient cooling of the power electronics 30, the electrical machine 10 and the transmission 20, so that especially in performance applications in the high power class of 480 V to 850 V, in which the electrical machine and the power electronics but also the transmission are a are subject to increased thermal stress, all thermally stressed components are reliably cooled.
  • FIG. 5 shows a schematic illustration of an exemplary embodiment of the vehicle 100 with the modular axle drive 1 as described above.
  • the modular axle drive 1 is mechanically detachably connected to a frame of the vehicle 100 via the installation adapter 50.
  • a drive axle 70 of the vehicle 100 is non-rotatably connected to an output of the transmission 20 and a second drive axle (not shown) is non-rotatably connected to the intermediate shaft and thus to the transmission output.
  • a driven wheel 80 is rotatably connected to the drive axle 70 and another driven wheel (not shown) is rotatably connected to the second drive axle.
  • the electric machine 10 (controlled by the power electronics 30) drives the two driven wheels 80 via the transmission 20.
  • the modular axle drive 1 is connected in a fluid-conducting manner to a coolant reservoir 60 with integrated cooling (e.g. heat exchanger, expander, etc.).
  • Cold coolant can flow in from the coolant reservoir 60 at the coolant inlet of the modular final drive 1, flow through the common cooling circuit of electronics coolant channels 32 along the electronics housing 31, machine coolant channels 12 along the machine housing 11 and transmission coolant channels 22 along the transmission housing 21 and the heat exchanger 40, and heat from the Pick up power electronics 30, the electrical machine 10 and the transmission 20 as well as the oil of the transmission 20, and finally flow from the coolant drain of the modular final drive 1 back into the coolant reservoir 60.
  • FIG. 6 shows a flow chart for explaining an exemplary embodiment of the production method for a modular axle drive 1.
  • the manufacturing method described here includes a method step S1, in which the machine housing 11 of the electrical machine 10 is mechanically detachably connected to the transmission housing 21 of the transmission 20 on its drive side 13 which is at the front in the axial direction.
  • the at least one machine coolant channel 12 of the machine housing 11 and the at least one transmission coolant channel 22 of the transmission housing 21 are connected to one another in a fluid-conducting manner.
  • the cover 15 of the machine housing 11 is mechanically detachably connected to the machine housing 11 on its rear side 14, which is located at the rear in the axial direction.
  • the electronics housing 31 of the power electronics 30 is mechanically detachably connected to the cover 15 and the gear housing 21.
  • the at least one electronics coolant channel and the machine coolant channel and / or the transmission coolant channel connected to one another in a fluid-conducting manner.
  • the installation adapters 50 are mechanically detachably connected to the cover 15 and the gear housing 21 at screw-on points 51, 52 of the cover 15 and the gear housing 21.
  • FIG. 7 shows a flow chart for explaining an exemplary embodiment of the assembly method of a modular axle drive 1 in a vehicle 100.
  • a modular axle drive 1 produced according to the manufacturing method explained above is mounted in the vehicle 100 by means of the following assembly steps.
  • the drive shaft 70 of the vehicle 100 is connected in a rotationally fixed manner to the transmission output of the transmission 20 of the modular axle drive 1.
  • the installation adapters 50 of the modular axle drive 1 are mechanically detachably connected to a frame of the vehicle 100.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • General Details Of Gearings (AREA)

Abstract

L'invention concerne un essieu moteur modulaire, notamment un essieu moteur électrique modulaire, pour véhicules, un procédé de fabrication d'un essieu moteur modulaire et un procédé de montage d'un essieu moteur modulaire dans un véhicule. Un carter d'une machine électrique de l'essieu modulaire présente au moins un canal de liquide de refroidissement pour machine. Un carter d'une boîte de vitesses de l'essieu modulaire présente au moins un canal de liquide de refroidissement pour boîte de vitesses. Un carter d'une électronique de puissance de l'essieu modulaire présente au moins un canal de liquide de refroidissement pour électronique. Le carter de machine est, sur son côté entraînement situé en amont dans la direction axiale, relié mécaniquement de manière libérable au carter de boîte de vitesses. le carter d'électronique est mécaniquement relié de manière libérable au carter de boîte de vitesses et au carter de machine. Le canal de liquide de refroidissement d'électronique est relié par liaison fluidique à une entrée de liquide de refroidissement. Le canal de liquide de refroidissement de machine et/ou le canal de liquide de refroidissement de boîte de vitesses sont reliés par liaison fluidique à une sortie de liquide de refroidissement. Le canal de liquide de refroidissement d'électronique, le canal de liquide de refroidissement de machine et le canal de liquide de refroidissement de boîte de vitesses sont reliés par liaison fluidique de manière à ce que le liquide de refroidissement puisse s'écouler de l'entrée de liquide de refroidissement jusqu'à la sortie de liquide de refroidissement en passant par le canal de liquide de refroidissement d'électronique, le canal de liquide de refroidissement de machine et le canal de liquide de refroidissement de boîte de vitesses.
PCT/EP2020/078929 2019-11-20 2020-10-14 Essieu moteur électrique modulaire WO2021099034A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019217872.3 2019-11-20
DE102019217872.3A DE102019217872A1 (de) 2019-11-20 2019-11-20 Modularer elektrischer Achsantrieb

Publications (1)

Publication Number Publication Date
WO2021099034A1 true WO2021099034A1 (fr) 2021-05-27

Family

ID=72885572

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2020/078929 WO2021099034A1 (fr) 2019-11-20 2020-10-14 Essieu moteur électrique modulaire

Country Status (2)

Country Link
DE (1) DE102019217872A1 (fr)
WO (1) WO2021099034A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022130545A1 (de) 2022-11-18 2024-05-23 Bayerische Motoren Werke Aktiengesellschaft Maschinengehäuse für eine Maschinenanordnung, Verfahren zur Herstellung einer Maschinenanordnung und Maschinenanordnung für ein Kraftfahrzeug

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022107098B3 (de) 2022-03-25 2023-07-20 Schaeffler Technologies AG & Co. KG Elektrisch betreibbarer Achsantriebsstrang und Verfahren zur Herstellung eines elektrisch betreibbaren Achsantriebsstrangs
EP4333270A1 (fr) * 2022-09-02 2024-03-06 Valeo eAutomotive Germany GmbH Ensemble inverseur pour un moteur électrique ou une boîte de vitesses

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0585644A1 (fr) * 1992-09-03 1994-03-09 Licentia Patent-Verwaltungs-GmbH Machine électrique entièrement fermée, refroidie en surface par liquide
EP0990820A2 (fr) * 1998-10-02 2000-04-05 DaimlerChrysler AG Motoréducteur avec refroidissement commun
US20120153718A1 (en) * 2010-12-17 2012-06-21 Tesla Motors, Inc. Thermal Management System for Use with an Integrated Motor Assembly
DE102013204766A1 (de) * 2013-03-19 2014-09-25 Robert Bosch Gmbh Elektrische Fahrzeugachsenvorrichtung
DE102015217875A1 (de) * 2015-09-17 2017-03-23 Siemens Aktiengesellschaft Antriebssystem mit einer elektrischen Maschine und einem Getriebe
DE102017215835A1 (de) * 2017-09-07 2019-03-07 Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg Fluidgekühlte elektrische Maschine
DE102018209340B3 (de) * 2018-06-12 2019-04-25 Bayerische Motoren Werke Aktiengesellschaft Betriebsstrategie für einen Mehrphasensystem-Inverter einer elektrischen Antriebseinheit für ein Kraftfahrzeug
DE102018201817A1 (de) * 2018-02-06 2019-08-08 Robert Bosch Gmbh Elektrische Antriebseinheit für ein Kraftfahrzeug

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0585644A1 (fr) * 1992-09-03 1994-03-09 Licentia Patent-Verwaltungs-GmbH Machine électrique entièrement fermée, refroidie en surface par liquide
EP0990820A2 (fr) * 1998-10-02 2000-04-05 DaimlerChrysler AG Motoréducteur avec refroidissement commun
US20120153718A1 (en) * 2010-12-17 2012-06-21 Tesla Motors, Inc. Thermal Management System for Use with an Integrated Motor Assembly
DE102013204766A1 (de) * 2013-03-19 2014-09-25 Robert Bosch Gmbh Elektrische Fahrzeugachsenvorrichtung
DE102015217875A1 (de) * 2015-09-17 2017-03-23 Siemens Aktiengesellschaft Antriebssystem mit einer elektrischen Maschine und einem Getriebe
DE102017215835A1 (de) * 2017-09-07 2019-03-07 Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg Fluidgekühlte elektrische Maschine
DE102018201817A1 (de) * 2018-02-06 2019-08-08 Robert Bosch Gmbh Elektrische Antriebseinheit für ein Kraftfahrzeug
DE102018209340B3 (de) * 2018-06-12 2019-04-25 Bayerische Motoren Werke Aktiengesellschaft Betriebsstrategie für einen Mehrphasensystem-Inverter einer elektrischen Antriebseinheit für ein Kraftfahrzeug

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022130545A1 (de) 2022-11-18 2024-05-23 Bayerische Motoren Werke Aktiengesellschaft Maschinengehäuse für eine Maschinenanordnung, Verfahren zur Herstellung einer Maschinenanordnung und Maschinenanordnung für ein Kraftfahrzeug
WO2024104735A1 (fr) 2022-11-18 2024-05-23 Bayerische Motoren Werke Aktiengesellschaft Boîtier de machine pour un agencement de machine, procédé de fabrication d'un agencement de machine et agencement de machine pour un véhicule à moteur

Also Published As

Publication number Publication date
DE102019217872A1 (de) 2021-05-20

Similar Documents

Publication Publication Date Title
WO2021099034A1 (fr) Essieu moteur électrique modulaire
DE102006044498B4 (de) Statorkühlsystem für ein Hybridgetriebe
DE102017120985A1 (de) Elektrisches fahrzeugantriebssystem
DE102011089200A1 (de) Über eine äußere Abdeckung gekühlte elektrische Rotationsmaschine und dafür verwendetes Gehäuse
WO2013050182A1 (fr) Dispositif de transmission électromotorisé
DE102013226804B4 (de) Antriebsanordnung mit integrierter Schmierung
EP3074254B1 (fr) Module hybride et module électronique de puissance comportant un flux de refroidissement commun
WO2015188819A2 (fr) Carter modulaire pour module hybride
WO2020207537A1 (fr) Entraînement électrique comprenant une section d'échangeur de chaleur
DE202010001318U1 (de) Elektrische Achsantriebsbaugruppe
DE102018111418A1 (de) Antriebsmodul für ein Fahrzeug
EP3723246A1 (fr) Dispositif de contrôle de la température pour un module électrique et module électrique doté d'un tel dispositif
DE102021203379A1 (de) Kühlanordnung für eine elektrische antriebsbaugruppeeines arbeitsfahrzeugs
EP1556634A1 (fr) Dispositif d'entrainement de vehicule a moteur
EP3928417A1 (fr) Carter de machine électrique segmenté en plusieurs parties
WO2021047831A1 (fr) Carter de système conçu pour un entraînement d'essieu électrique d'un véhicule automobile et entraînement d'essieu électrique conçu pour un véhicule automobile
WO2013007399A1 (fr) Dispositif de transmission comportant au moins un moteur électrique, destiné à un véhicule
WO2019242800A1 (fr) Unité d'entraînement pour chaîne cinématique d'un véhicule automobile à entraînement électrique, ensemble d'entraînement équipé de celle-ci et véhicule automobile
WO2021110199A1 (fr) Unité d'entraînement et ensemble d'entraînement
EP4115500A1 (fr) Boîtier de système pour un système d'entraînement
DE102012022451B4 (de) Ringkanaleinrichtung, elektrische Maschine und Antriebsstrang
DE19959022C1 (de) Antriebseinheit
DE102014208867A1 (de) Integration einer Elektromotoreneinheit in ein Getriebegehäuse
DE102007002949A1 (de) Antriebsvorrichtung
DE102016215190A1 (de) Getriebe für ein Kraftfahrzeug

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20792393

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20792393

Country of ref document: EP

Kind code of ref document: A1