EP3911867A1 - Trockendoppelkupplung für eine elektrische achse sowie elektrische achse mit der trockendoppelkupplung - Google Patents
Trockendoppelkupplung für eine elektrische achse sowie elektrische achse mit der trockendoppelkupplungInfo
- Publication number
- EP3911867A1 EP3911867A1 EP19828213.9A EP19828213A EP3911867A1 EP 3911867 A1 EP3911867 A1 EP 3911867A1 EP 19828213 A EP19828213 A EP 19828213A EP 3911867 A1 EP3911867 A1 EP 3911867A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- clutch
- coupling
- section
- spring element
- actuating
- Prior art date
- Legal status (The legal status 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 status listed.)
- Withdrawn
Links
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D21/00—Systems comprising a plurality of actuated clutches
- F16D21/02—Systems comprising a plurality of actuated clutches for interconnecting three or more shafts or other transmission members in different ways
- F16D21/06—Systems comprising a plurality of actuated clutches for interconnecting three or more shafts or other transmission members in different ways at least two driving shafts or two driven shafts being concentric
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D25/00—Fluid-actuated clutches
- F16D25/08—Fluid-actuated clutches with fluid-actuated member not rotating with a clutching member
- F16D25/082—Fluid-actuated clutches with fluid-actuated member not rotating with a clutching member the line of action of the fluid-actuated members co-inciding with the axis of rotation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D25/00—Fluid-actuated clutches
- F16D25/10—Clutch systems with a plurality of fluid-actuated clutches
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D21/00—Systems comprising a plurality of actuated clutches
- F16D21/02—Systems comprising a plurality of actuated clutches for interconnecting three or more shafts or other transmission members in different ways
- F16D21/06—Systems comprising a plurality of actuated clutches for interconnecting three or more shafts or other transmission members in different ways at least two driving shafts or two driven shafts being concentric
- F16D2021/0669—Hydraulically actuated clutches with two clutch plates
Definitions
- Dry double clutch for an electric axle and electric axle with the dry double clutch
- the present invention relates to a dry double clutch with the features of the preamble of claim 1. Furthermore, the invention relates to an electrical axis with this dry double clutch.
- E-axis electric drive axles
- the E-axis can be designed with multiple gears in order to achieve a higher top speed and to operate an electric motor in a more efficient power range.
- the clutch is designed as a dry double clutch in order to implement a power shift.
- the load switching capability leads to better driving comfort.
- the publication WO 2010 020 207 A1 which probably forms the closest prior art, discloses a double clutch with a first partial clutch, via which a drive shaft of a drive can be connected to a first transmission input shaft of a transmission, and with a second partial clutch, via which the drive shaft of the Drive can be connected to a second transmission input shaft of the transmission and to an actuating device.
- the first partial clutch is closed in its non-actuated state, with a tensile force being applied to open this first partial clutch.
- the second partial clutch is open in its non-actuated state, a compressive force being applied to close this second partial clutch, so that the operating force of the first partial clutch acts counter to the operating force of the second partial clutch.
- the invention relates to a dry double clutch, which is designed and / or suitable for an electric axle of a vehicle.
- a dry double clutch is to be understood as a double clutch that works in a lubricant-free atmosphere.
- the dry double clutch is designed to open and / or close and / or redirect a torque flow from an electric motor as the drive motor to driven wheels of the vehicle.
- the vehicle is preferably designed as an electric vehicle or as a flybrid vehicle.
- the dry double clutch has a clutch unit which comprises a first clutch device for coupling an input shaft to a first output shaft and a second clutch device for coupling the input shaft to a second output shaft.
- the drive shaft is designed in particular as a motor shaft or at least one shaft coupled to the electric motor in terms of drive technology.
- a drive torque is transmitted via the drive shaft.
- the two output shafts are guided to two different ratios in a subsequent gear section.
- the coupling unit thus forms a manual transmission together with the subsequent transmission section.
- a first gear stage is preferably formed by the one drive shaft and a second gear stage is formed by the other drive shaft, wherein either the first or the second gear stage or an idling mode can be shifted by the two clutch devices.
- the first and / or the second clutch device are preferably designed as a friction clutch, the two clutch devices being arranged coaxially and / or one behind the other in relation to a main axis.
- the dry double clutch has an actuation unit which comprises a first actuation device for actuating the first clutch device and a second actuation device for actuation of the second clutch device.
- the two coupling devices can be switched between a closed and an open operating state via the respectively associated actuating device.
- the first and / or the second actuating device can be designed, for example, as a hydraulic or pneumatic or mechanical or electromotive actuating device.
- the actuation unit in particular the first and / or the second actuation device, is supported in the axial direction with respect to the main axis on a stationary section, in particular stationary with respect to a housing of the dry double clutch.
- the two actuating devices are preferably arranged coaxially and / or concentrically with respect to the main axis.
- the first clutch device is closed in an unactuated state of the first actuation device and the second clutch device is open in an unactuated state of the second actuation device.
- “closed” is to be understood to mean that the clutch device is switched in the closed operating state, the drive shaft and the first output shaft of the first clutch device being connected to one another in a torque-transmitting manner.
- “open” is to be understood to mean that the clutch device is switched in the open operating state, the drive shaft and the second output shaft of the second clutch device being rotationally decoupled from one another.
- the first clutch device is thus designed as a “normally closed” clutch and the second clutch device as a “normally opened” clutch.
- the first clutch device is thus automatically kept closed in a basic state and the second clutch device is automatically kept open in a basic state.
- the first gear stage is particularly preferably on the first drive shaft, so that in an unactuated basic state of the dry double clutch, a first gear is permanently shifted through the first closed clutch device.
- the first clutch device can be acted upon by a first pressure force in the axial direction with respect to the main axis for opening by the first actuating device and that the second clutch device in the axial direction with respect to the main axis for closing with a second pressure force can be acted upon by the second actuating device.
- the two actuating devices can either be arranged jointly on the motor side or jointly on the transmission side.
- the first and the second coupling device can thus be actuated and / or actuated on one side.
- the first and the second compressive force are preferably rectified in the axial direction with respect to the main axis.
- the first pressure force is introduced by the first actuating device to actuate the first coupling device into the first coupling device, so that the first coupling device is switched to an open operating state.
- the second pressure force is introduced from the second actuating device to actuate the second coupling device into the second coupling device, so that the second coupling device is switched to a closed operating state.
- the two actuating devices can be actuated jointly or individually, so that the first and the second coupling device selectively assume the closed and / or the open operating state and alternate between these operating states.
- the first and / or the second pressure force can be introduced directly or indirectly into the corresponding coupling device via a transmitting means, for example lever spring, etc.
- the two actuating devices can be actuated at the same time or at different times. Both coupling devices are preferably each subjected to the compressive force, the first coupling device being opened and the second coupling device being closed. During a shift from the first gear stage to idling, only the first clutch device is acted upon by the pressure force, so that the first clutch device is opened and thus both clutch devices are switched in the opened operating state.
- the advantage of the invention is that by actuating the coupling devices on the basis of pressure forces, the actuating unit can be made significantly simpler.
- both coupling devices are opened at the same time.
- the starting performance of the vehicle can thus be improved since no clutch is required for starting. This means that when starting, the first clutch device can already be closed.
- the dry double clutch has a first spring element which is designed and / or suitable for acting on the first clutch device with a closing force.
- the first clutch device is kept closed by the closing force in the unactuated state of the first actuation device.
- the first compressive force that can be applied to open the first coupling device acts counter to the closing force, so that the first coupling device is preferably pressed on and / or relieved.
- the first spring element can be designed as a compression or tension spring.
- the dry double clutch has a second spring element which is designed and / or suitable for applying an opening force to the second clutch device.
- the second clutch device is kept open by the opening force in an unactuated state of the second actuation device.
- the second pressure force that can be applied to close the second clutch device acts counter to the opening force, so that the second clutch device is preferably pressed and / or loaded.
- the second spring element can be designed as a compression or tension spring.
- the first spring element acts on the first coupling device in an axial direction with respect to the main axis with a spring force as the closing force.
- the second spring element acts on the second coupling device in the axial direction with respect to the main axis with a spring force as the opening force.
- the first and / or the second spring element are designed as a plate spring, which are arranged coaxially and / or concentrically, in particular with respect to the main axis.
- the first spring element is supported on the one hand on the first actuating device and on the other hand on the first coupling device and / or is arranged braced between them.
- the second spring element is preferably supported on the one hand on the second actuating device and on the other hand on the second coupling device and / or arranged braced between them.
- the dry double clutch has a first bearing device which is designed and / or suitable for transmitting the first pressure force.
- the first spring element is supported on the one hand on the first bearing device and on the other hand on the first coupling device.
- the first bearing device serves in particular to separate the frictional connection between the first actuating device and the first spring element when the first pressure force is transmitted.
- the dry double clutch has a second bearing device which is designed and / or suitable for transmitting the second pressure force. The second bearing device is used in particular to separate the frictional connection between the second actuating device and the second spring element when the second actuating force is transmitted.
- the first and / or the second bearing device are preferably used to accommodate radial and / or axial loads.
- the first and / or the second bearing device are preferably designed as a roller bearing, preferably as a ball bearing, particularly preferably as an angular contact ball bearing.
- the first and / or the second bearing device can be fixed on the respective actuating device, in particular on an associated actuating member. If the second clutch device is closed as standard and is only opened when shifting into second gear, the ratio of the load components rotates and the bearing devices can be dimensioned significantly smaller, as a result of which the power loss is minimized.
- the first and the second coupling device have a drive-side coupling section for the rotationally fixed connection to the drive shaft.
- the drive shaft is connected in a rotationally fixed manner to the coupling section on the drive side.
- the drive-side coupling section has a central disk, the central disk defining a first coupling surface for the first coupling device with a first axial end face and a second coupling surface for the second coupling device with a second axial end face facing away from the first axial end face.
- the coupling section on the drive side has a flywheel, the central disk being connected in a rotationally fixed manner to the flywheel. The flywheel is again non-rotatable with the drive shaft, e.g. connected by a spline.
- the first clutch device has a first clutch section on the output side for connection to the first output shaft and a first pressure plate.
- the first output shaft is connected in a rotationally fixed manner to the first output-side coupling section.
- the first clutch section on the output side is held in a frictionally engaged manner between the first pressure plate and the clutch section on the drive side.
- the second clutch device has a second clutch section on the output side for connection to the second output shaft and a second pressure plate.
- the second output shaft is non-rotatably connected to the second output-side coupling section.
- the second output-side coupling section is closed Operating state of the second clutch device between the second pressure plate and the drive-side clutch section held frictionally.
- the first and / or the second output-side clutch section are each designed as a clutch disk.
- the drive-side clutch section in particular the central disk, is arranged in the axial direction with respect to the main axis between the two drive-side clutch sections.
- the first output-side clutch section is arranged in the axial direction with respect to the main axis between the drive-side clutch cut and the first pressure plate and / or the second output-side clutch section in the axial direction with respect to the main axis between the drive-side clutch cut and the second pressure plate.
- the clutch disc (s) and / or the central disc and / or the pressure plate (s) is / are arranged one behind the other with respect to the main axis and / or in the axial direction.
- the actuating unit is preferably arranged on the side of the first output-side coupling section.
- the first and second compressive forces act in a direction that points toward the electric motor.
- the actuation unit is arranged on the side of the second output-side coupling section.
- the first and / or the second pressure force act in a direction that points away from the electric motor.
- the first spring element acts on the first pressure plate with the closing force in the unactuated state of the first actuating device, so that the first output-side coupling section is held in a frictionally engaged manner.
- the first spring element is preferably supported on the one hand on the first pressure plate and on the other hand via the first bearing device on the first actuating device and / or is clamped between them.
- the second spring element acts on the second pressure plate with the opening force, so that the second output-side coupling section frictionlessly to the second pressure plate and / or the drive side Coupling section is arranged.
- the first spring element is preferably supported on the one hand on the second pressure plate and on the other hand via the second bearing device on the second actuating device and / or arranged braced between them.
- the second pressure plate is particularly preferably operatively connected to the second spring element via a transmission section, so that the second spring element can be arranged on a common side with the first spring element.
- the central disk and / or the first and / or second clutch disk and / or the first and / or second pressure plate have a friction lining.
- the first spring element in particular in the form of a plate spring, is supported with a radial inner section on the one hand on the first bearing device and on the other hand with a radial outer section on the first pressure plate.
- the first spring element with the radial inner section is supported and / or fixed on an inner ring of the first bearing device.
- the first spring element is supported with the radial outer section directly on a side of the first pressure plate facing away from the first clutch disk and / or is coupled to it in motion.
- the first spring element is supported with a radial center section via a support on the drive-side coupling section, the first spring element being pivotable about the support when the first pressure force is applied, so that the first pressure plate is relieved and the first coupling device is opened.
- the first spring element is held captively on the support.
- the spring element can preferably be held on the support in a form-fitting manner at least in the axial direction.
- the first bearing device is acted upon by the first pressure force and moved in the direction of the first spring element.
- the first spring element in particular the plate spring, is acted upon by the first pressure force at its radial inner section and pivoted about the support, so that the first spring element with its radial outer section moves the first pressure plate away and / or is moved away from the first pressure plate.
- a preload spring can be provided which applies a preload to the first spring element in the axial direction with respect to the main axis.
- the preload spring preferably applies a preload force to the first actuating device, in particular the associated actuating member, as the preload.
- the preload spring can be designed as a compression or tension spring.
- the second spring element in particular designed as a plate spring, is supported on the one hand on the second bearing device with a radial inner section and on the other hand on the second pressure plate with a radial outer section.
- the second spring element is supported and / or fixed with the radial inner section on an inner ring of the second bearing device.
- the second spring element with the radial outer section is supported indirectly via the transmission section on the first pressure plate and / or is coupled to it in motion.
- the second spring element is supported with a radial center section via a further support on the drive-side coupling section, the second spring element being pivotable about the further support when the second pressure force is applied, so that the second pressure plate is loaded and the second coupling device is closed.
- the second spring element can be held captively on the further support.
- the second bearing device is acted upon by the second pressure force and moved in the direction of the second spring element.
- the second spring element, in particular the plate spring is acted upon by the second pressure force at its radial inner section and pivoted about the further support, so that the second spring element with its radial outer section, in particular via the transmission section, in the direction of the output-side clutch section the second clutch disc moves.
- Another object of the invention relates to an electric axle for a vehicle, the electric axle having the dry double clutch as described above.
- the electric axle has a manual transmission.
- one or the gearbox is formed by the dry double clutch and two subsequent, different gear ratios.
- the electrical axis optionally has a differential device, the differential device being connected downstream of the manual transmission.
- FIG. 1 shows a schematic longitudinal section through an electrical axis with a dry double clutch as an embodiment of the invention.
- Figure 2 is a schematic longitudinal section through the dry double clutch
- FIG. 1 shows a schematic longitudinal section of an electric axle 1 as a drive train for a vehicle, which is used to drive the vehicle. This has two output shafts 2a, b, which are operatively connected to driven wheels of an axle of the vehicle.
- the electric axis 1 has an electric motor 3, only indicated schematically, which is arranged coaxially with a main axis H defined by the output shafts 2a, b.
- the electric motor 3 has a rotor shaft as an output, which forms a drive shaft 4 and is arranged as a hollow shaft coaxially and concentrically with the output shaft 2a.
- the electrical axis 1 has a dry double clutch 5, the drive shaft 4 forming an input of the dry double clutch 5.
- the dry double clutch 5 has a clutch unit 6, which a first and comprises a second coupling device 7, 8.
- a first and a second output shaft 9a, b are provided as outputs of the dry double clutch 5, which, for example in a subsequent gear section 10, only indicated schematically, lead to two different ratios, so that the electric axis 1 has at least or exactly two gears and optionally additionally a neutral gear having.
- the dry double clutch 5 thus forms a manual transmission together with the subsequent transmission section 10.
- the electrical axis 1 has a housing 11 which encloses the electric motor 3, the dry double clutch 5 and the subsequent gear section 10.
- the housing 11 has a stationary section 12, which is fixed and / or rigidly connected to the housing 11, for example.
- the first and the second clutch device 7, 8 are each designed as a dry friction clutch and are arranged, for example, in a lubricant-free housing section of the electrical axis 1.
- the first clutch device 7 is implemented as a “normally closed” clutch and the second clutch device 8 is implemented as a “normally opened” clutch.
- "Normally closed” means that the first clutch device 7 is in an unactuated basic state of the dry double clutch 5 in a closed operating state.
- the drive shaft 4 and the first output shaft 9a are rotatably coupled to one another, so that the electrical axis 1 is switched in a first gear as standard.
- the second clutch device 8, on the other hand, is in an unactuated basic state of the dry double clutch 5 in an open operating state, wherein “normally opened” thus means that the drive shaft 4 and the second output shaft 9b are decoupled from one another.
- the dry double clutch 5 has an actuation unit 13 which enables the dry double clutch 5 to be actuated.
- the actuating unit 13 has a first actuating device 14 for actuating the first coupling device 7 and a second actuating device 15 for actuating the second coupling device 8.
- the Actuating unit 13 is designed hydraulically, the first actuating device 14 applying a first hydraulically generated pressure force F1 to open the first coupling device 7, the first coupling device 7 and the second actuating device 15 a second hydraulically generated pressing force F2 to close the second coupling device 8, the second coupling device 8 can transmit.
- the first coupling device 7 can optionally be opened and / or the second coupling device 8 can be closed.
- the actuation unit 13 is fixedly mounted and / or supported on the section 12.
- FIG. 2 shows the dry double clutch 5 in a schematic longitudinal section along the main axis H.
- the first and the second clutch devices 7, 8 have a drive-side clutch section 16 and in each case a drive-side clutch section 17 a, b, the drive side clutch section 16 on the side of the electric motor 3 , as shown in Figure 1, and the output-side coupling section 17a, b on the side of the gear section 10, as shown in Figure 1, are arranged.
- the clutch section 16 on the drive side has a flywheel 18 and a central disk 19 and support housing 20 which are connected in a rotationally fixed manner to the flywheel 18.
- the flywheel 18 is rotatably connected to the drive shaft 4.
- the flywheel 18, the central disk 19 and the support housing 20 are connected in a rotationally fixed manner to one another radially on the outside with respect to the main axis H and are spaced apart radially on the inside in the axial direction.
- the central disk 19 forms a first clutch surface 19a with an axial end face facing the first output-side clutch section 17a and a second clutch face 19b with an axial end face facing the second output-side clutch section 17b.
- the first and / or the second clutch surface 19a, b can be formed by a friction lining.
- the two output-side clutch sections 17a, b are each designed as a clutch disc, the first output-side clutch section 17a being non-rotatably connected to the first output shaft 9a and the second output side Coupling section 17b is rotatably connected to the second output shaft 9b.
- the drive-side clutch section 16, in particular the central disk 19, can optionally be placed in connection with the first drive-side clutch section 17a and / or the second drive-side clutch section 17b, so that the drive shaft 2 is optionally connected to the first drive shaft 9a or to the second drive shaft 9b can be.
- the first clutch device 7 has a first pressure plate 21a and the second clutch device 8 has a second pressure plate 21b.
- the two pressure plates 21 a, b can be moved in the axial direction with respect to the main axis, but are arranged in a rotationally fixed manner in the circumferential direction around the main axis H.
- the first output-side coupling section 17a and the first pressure plate 21a are arranged in the axial direction with respect to the main axis H between the central disk 19 and the support housing 20.
- the second output-side coupling section 17b and the second pressure plate 21b are arranged in the axial direction with respect to the main axis H between the flywheel 18 and the central disk 19.
- the first and / or the second pressure plate 21 a, b can have a further friction lining.
- the two clutch disks can have the friction linings.
- the first pressure force F1 is transmitted via a first bearing device 22 and the second pressure force F2 via a second bearing device 23 in an axial direction with respect to the main axis H.
- the first actuating device 14 has a first actuating member 24a and the second actuating device 15 has a second actuating member 24b.
- the two actuators 24a, b are each designed as a hydraulic cylinder, which enable a stroke in the axial direction to the main axis H.
- the first actuating member 24a actuates the first coupling device 7 via the first bearing device 22 and the second actuating member 24b actuates the second coupling device 8 via the second bearing device 23, one or both coupling devices 7, 8 being selectively operable.
- the two actuators 24a, b are as Ring cylinder formed coaxially to the main axis H.
- the two bearing devices 22, 23 also run coaxially around the main axis H.
- the dry double clutch 5 has a first and a second spring element 25a, b, the two spring elements 25a, b each being designed as a plate spring and arranged coaxially to the main axis H.
- the first spring element 25a is supported with a radial outer section in the axial direction with respect to the main axis H on the first pressure plate 21a and with a radial inner section in an axial opposite direction on an inner ring of the first bearing device 22.
- the first spring element 25a acts on the first pressure plate 21a in an unactuated state of the first actuating device 14 in the axial direction with respect to the main axis H with a closing force F3.
- the first output-side clutch section 17a which is designed as a clutch disk, is held frictionally between the first clutch surface 19a and the first pressure plate 21a, and the first clutch device 7 is switched in a closed operating state.
- the second coupling device 8 has a transmission section 26, the transmission section 26 being mounted on the second pressure plate 21b and extending in the direction of the actuation unit 13 such that the second spring element 25b is arranged on a common side with the first spring element 25b and on one side can be actuated by the actuating unit 13.
- the second spring element 25b is supported on the transmission section 26 with a radial outer section with respect to the main axis H in the axial opposite direction and with an inner ring of the second bearing device 23 with a radial inner section.
- the second spring element 25b acts on the second pressure plate 21b via the transmission section 26 in an unactuated state of the second actuating device 15 in the axial direction with respect to the main axis H with an opening force F4.
- the second output-side clutch section 17b designed as a clutch disk, is arranged contact-free or at least relieved between the second clutch surface 19b and the second pressure plate 21b, and the second clutch device 8 is switched in an open operating state.
- the first actuating device 14 is actuated, the first pressure force F1 is transmitted to the first spring element 25a via the first bearing device 22, so that the first spring element 25a is deformed and the first coupling device 7 is opened.
- the first spring element 25a is pivotally mounted on the output-side coupling section 16, in particular the support housing 20, via a support 20a, so that when the first pressure force F1 is applied, the first spring element 25a pivots about the support 20a and relieves or relieves the first pressure plate 21a is moved away from the second output-side coupling section 17a.
- the two clutch devices 7, 8 are thus in an opened operating state, so that the electric axis 1 is switched into a neutral gear.
- the second pressure force F2 is transmitted to the second spring element 25b via the second bearing device 23, so that the second spring element 25b is deformed and the second coupling device 8 is opened.
- the second spring element 25b is pivotally mounted on the output-side coupling section 16, in particular the support housing 20, via a further support 20b, so that when the second pressure force F2 is applied, the second spring element 25b pivots about the further support 20b and the second pressure plate 21b is loaded or moved to the second output-side coupling section 17b.
- the support housing 20 is designed such that the support 20a is arranged on a side facing the first coupling device 7 and the further support 20b is arranged on a side facing away from the first coupling device 7.
- the support housing 20 is thus arranged in the axial direction with respect to the main axis H between the two spring elements 25a, b, the two spring elements 25a, b being supported together on the support housing 20.
- the transmission section 26 is axially guided and / or slidably supported by the drive-side coupling section 16.
- both actuation devices in 14, 15 must be actuated.
- the two actuating devices 14, 15 can be actuated at the same time or at different times.
- the first clutch device 7 is thus in an open operating state and the second clutch device 8 is in a closed operating state, so that the electric axis 1 is shifted in a second gear.
- first actuation device 14 has a first preload spring 27a and the second actuation device 15 has a second preload spring 27b.
- the first preload spring 27a acts on the first actuation member 24a and the second preload spring 27b acts on the second actuation member 24b in the axial direction with respect to the main axis F1 with a preload.
- the exemplary embodiment shown represents the operating state of the electric axle 1 with which the vehicle is driven in first gear.
- the load on the first bearing device 22 is significantly lower and the time shares are reduced, since only the preload acts on the first bearing device 22 over long driving parts.
- the force on the first bearing device 22 can be significantly reduced (depending on the ratio) by the lever ratio between the first bearing device 22 and the clutch disc, so that the first bearing device 22 can be dimensioned significantly smaller overall.
- Another advantage is that with the electric axle 1, in which the vehicle is driven completely electrically, no clutch is required to start off. That is, when starting, the first clutch device 7 is already closed. In addition, it is possible to drive in one gear for a relatively long time, with only the first gear being used, for example, when driving around town, while driving in high gear in the second gear at high speeds. Usually there are large load components in the load collective for the bearings on the first clutch device 7. However, if the first clutch device 7 is closed as standard and is only opened when shifting into second gear, the ratio of the rotates Load components and the bearing device 22 can be dimensioned significantly smaller, which also allows the power loss to be minimized.
- the reduced load spectrum thus proposes a dry double clutch, which is necessary for use in the electrical axis 1.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanical Operated Clutches (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102019100969.3A DE102019100969B4 (de) | 2019-01-16 | 2019-01-16 | Trockendoppelkupplung für eine elektrische Achse sowie elektrische Achse mit der Trockendoppelkupplung |
PCT/DE2019/101061 WO2020147873A1 (de) | 2019-01-16 | 2019-12-10 | Trockendoppelkupplung für eine elektrische achse sowie elektrische achse mit der trockendoppelkupplung |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3911867A1 true EP3911867A1 (de) | 2021-11-24 |
Family
ID=69024077
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP19828213.9A Withdrawn EP3911867A1 (de) | 2019-01-16 | 2019-12-10 | Trockendoppelkupplung für eine elektrische achse sowie elektrische achse mit der trockendoppelkupplung |
Country Status (6)
Country | Link |
---|---|
US (1) | US20220056964A1 (de) |
EP (1) | EP3911867A1 (de) |
KR (1) | KR20210113166A (de) |
CN (1) | CN113302416A (de) |
DE (1) | DE102019100969B4 (de) |
WO (1) | WO2020147873A1 (de) |
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DE19941837A1 (de) * | 1999-07-29 | 2001-02-01 | Rohs Voigt Patentverwertungsge | Kupplung, Anschlußelement sowie Anordnung hieraus und Verfahren zur Montage einer Kupplung |
DE10004190B4 (de) * | 1999-09-30 | 2013-02-07 | Volkswagen Ag | Mehrfach-Kupplungseinrichtung |
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US6830139B2 (en) * | 2001-10-09 | 2004-12-14 | Zf Sachs Ag | Multi-clutch arrangement |
EP1400716B1 (de) * | 2002-09-20 | 2005-06-22 | ZF Sachs AG | Kupplungssystem und Halteanordnung zum Halten wenigstens einer Kupplungsanordnung des Kupplungssystems in einem momentanen oder vorgegebenen Einrückzustand |
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WO2015149804A1 (de) * | 2014-03-31 | 2015-10-08 | Schaeffler Technologies AG & Co. KG | Doppelkupplung |
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DE102015202526A1 (de) * | 2015-02-12 | 2016-08-18 | Schaeffler Technologies AG & Co. KG | Kupplungseinrichtung sowie Drehmomentübertragungseinrichtung für ein Fahrzeug |
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CN108556607A (zh) * | 2018-06-12 | 2018-09-21 | 福建万润新能源科技有限公司 | 一种电动汽车集成动力装置 |
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-
2019
- 2019-01-16 DE DE102019100969.3A patent/DE102019100969B4/de not_active Expired - Fee Related
- 2019-12-10 US US17/417,222 patent/US20220056964A1/en not_active Abandoned
- 2019-12-10 WO PCT/DE2019/101061 patent/WO2020147873A1/de unknown
- 2019-12-10 KR KR1020217015948A patent/KR20210113166A/ko unknown
- 2019-12-10 EP EP19828213.9A patent/EP3911867A1/de not_active Withdrawn
- 2019-12-10 CN CN201980089195.2A patent/CN113302416A/zh active Pending
Also Published As
Publication number | Publication date |
---|---|
DE102019100969B4 (de) | 2021-06-17 |
DE102019100969A1 (de) | 2020-07-16 |
WO2020147873A1 (de) | 2020-07-23 |
CN113302416A (zh) | 2021-08-24 |
US20220056964A1 (en) | 2022-02-24 |
KR20210113166A (ko) | 2021-09-15 |
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