EP4423892A1 - Moteur à flux axial fixé à un boîtier et doté d'une fonction de réglage - Google Patents

Moteur à flux axial fixé à un boîtier et doté d'une fonction de réglage

Info

Publication number
EP4423892A1
EP4423892A1 EP22801334.8A EP22801334A EP4423892A1 EP 4423892 A1 EP4423892 A1 EP 4423892A1 EP 22801334 A EP22801334 A EP 22801334A EP 4423892 A1 EP4423892 A1 EP 4423892A1
Authority
EP
European Patent Office
Prior art keywords
stator
axial
housing
rotor
bearing
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.)
Pending
Application number
EP22801334.8A
Other languages
German (de)
English (en)
Inventor
Dirk Reimnitz
Ivo Agner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schaeffler Technologies AG and Co KG
Original Assignee
Schaeffler Technologies AG and Co KG
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 Schaeffler Technologies AG and Co KG filed Critical Schaeffler Technologies AG and Co KG
Publication of EP4423892A1 publication Critical patent/EP4423892A1/fr
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
    • H02K21/24—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets axially facing the armatures, e.g. hub-type cycle dynamos
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/02—Details
    • H02K21/021—Means for mechanical adjustment of the excitation flux
    • H02K21/022—Means for mechanical adjustment of the excitation flux by modifying the relative position between field and armature, e.g. between rotor and stator
    • H02K21/025—Means for mechanical adjustment of the excitation flux by modifying the relative position between field and armature, e.g. between rotor and stator by varying the thickness of the air gap between field and armature
    • H02K21/026—Axial air gap machines
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/16—Centring rotors within the stators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K16/00—Machines with more than one rotor or stator
    • H02K16/04—Machines with one rotor and two stators
    • 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
    • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
    • H02K5/161—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields radially supporting the rotary shaft at both ends of the rotor
    • 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
    • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
    • H02K5/173—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
    • H02K5/1732—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings radially supporting the rotary shaft at both ends of the rotor
    • 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
    • H02K7/08—Structural association with bearings
    • H02K7/083—Structural association with bearings radially supporting the rotary shaft at both ends of the rotor
    • 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
    • H02K2213/09—Machines characterised by the presence of elements which are subject to variation, e.g. adjustable bearings, reconfigurable windings, variable pitch ventilators

Definitions

  • the present invention relates to an electrical axial flow machine, in particular an electric motor, having a housing in which there is a stator with two stator halves and a rotor which is arranged between the two stator halves.
  • the stator and the rotor are supported by the housing surrounding the axial flow machine.
  • the width of the air gap between the two stator halves and the distance between the stator halves and the rotor can also be adjusted using adjustment elements between different assemblies of the axial flow machine.
  • the invention also relates to an assembly method for axially aligning the assemblies with one another.
  • the components through which the magnetic field flows must be very precisely aligned, since even small deviations in the position of the components among one another can have a significant effect on the magnetic flux (e.g. due to altered air gaps). It is therefore important that the mechanical structure of the electric motor ensures the necessary exact positioning of the components through which the magnetic field flows. This is achieved through a rigid, tolerance-insensitive mechanical structure and through very precise manufacturing of the components. Dimensional deviations in the components of the electric motor through which the magnetic field flows, regardless of whether they are deviations in shape or position, impair the efficiency, the service life and/or the performance of the electric motor.
  • the present invention is therefore based on the object of eliminating or at least minimizing the disadvantages described above.
  • the motor housing as a supporting structure for the electric motor and the effects of the long chain of tolerances are thereby reduced to a simple level, the axial flux motors presented below represent a particularly economical concept.
  • An axial flux machine is provided with a supporting component, preferably a (motor) housing in which there is a stator having first and second stator halves, the stator halves being fixed to the housing, and with a rotor arranged between the stator halves , which is in non-rotatable contact with a rotor shaft, which is rotatably mounted on bearing points relative to the stator and the housing.
  • the axial flux machine has an I-arrangement in which a rotor disk is arranged between two stator halves of a stator and can be acted upon by an electromagnetic rotating field whose magnetic field lines are in the air gap formed between the rotor and the stator in the axial direction (for this Case of the axial flow machine) extend.
  • the special feature of this axial flow machine is that both the stator and the rotor are supported directly or via a rotor shaft on the motor housing and no direct bearing is provided between the rotor and the stator. Furthermore, the entire stator, consisting of the two stator halves, is fastened/bolted to the motor housing, which forms the component supporting the axial flow machine, so that it cannot rotate or move.
  • the fastening point can be changed by varying the thickness of one or more adjustment elements, the orientation of the stator relative to the motor housing and thus also relative to the rotor, which is also fastened axially to the motor housing via the rotor shaft.
  • the thickness of the adjustment element between the rotor and the shaft more precisely the shaft shoulder on which the rotor is attached or rests, can also be changed.
  • the axial position of the rotor relative to the component supporting the axial flow machine and thus also relative to the stator can also be adjusted by changing this adjusting element, which is designed as an adjusting disk.
  • the costs can be reduced and the necessary installation space can be reduced. Due to the fact that the axial alignment of the stator and rotor to each other takes place via the component supporting the axial flow machine, not only the tolerances and shape deviations of the stator and the rotor have to be recorded and compensated for the correct setting of the air gap width between the two stator halves, but also the tolerances and shape deviations of the component supporting both the stator and the rotor. For this reason, exact positioning and high alignment accuracy of the components through which the magnetic field flows can be ensured.
  • the axial flow machine has a further adjustment element between the two stator halves or between the two stator halves and the housing.
  • the axial flow machine has a direct connection/screw connection between the two stator halves, which precisely defines the axial alignment of the two stator halves with respect to one another.
  • each of the two stator halves is mechanically connected/bolted directly via the respective stator housing to the motor housing, which forms the component supporting the axial flux machine.
  • axially movable / displaceable or elastic connections which are used for example for radial centering, insulation, protection against dust or moisture, electrical power transmission, data transmission or the transport of coolants or lubricants, can be used to connect the two stator halves of this second embodiment.
  • the motor housing is the reference part to which the three subassemblies, right stator half, rotor and left stator half, are attached and aligned and via which the position of the subassemblies relative to one another can also be fixed.
  • the rotor shaft is mounted on the housing via a bearing that transmits axial forces, the bearing having at least one inner bearing ring or one outer bearing ring and a further adjustment element being arranged on at least one axial end of the inner bearing ring or the outer bearing ring.
  • additional adjustment elements are arranged on one or both axial ends of a bearing inner ring or bearing outer ring of the bearing, which is designed to support the rotor shaft on the motor housing.
  • the bearing inner ring is arranged directly on a shaft shoulder of the rotor shaft.
  • the axial position of the rotor shaft and also the position of the rotor fastened to the rotor shaft can be changed/adjusted by means of different thicknesses of the at least one adjustment element on the bearing inner ring.
  • the bearing outer ring is arranged directly on a shoulder of the motor housing.
  • the axial position of the bearing and also the position of the rotor attached to the bearing can be changed/adjusted by different thicknesses of at least one adjustment element on the bearing outer ring.
  • the use of these additional adjustment elements that is to say the increase in the possible use positions for adjustment elements, increases the flexibility of the adjustments/alignment of the components of the axial flow machine.
  • the setting elements are composed of a plurality of partial elements stacked one on top of the other in order to set a required setting dimension by combining a large number of the partial elements.
  • the required adjustment dimension can be formed by several adjustment elements with the same dimensions (e.g. with the same thickness) or several adjustment elements with different dimensions (e.g. different thicknesses).
  • a number of setting elements can be combined in order to set/adapt the positions of two assemblies of the axial flux machine according to the invention exactly relative to one another.
  • several setting elements/partial elements can be stacked on top of one another, so that the required setting dimension is formed or set by the sum of the setting element thicknesses.
  • several adjustment elements can also be distributed next to one another on the contact surfaces of the assemblies or distributed over the circumference of the assemblies.
  • Arranging several adjustment elements of the same thickness or several stacks of adjustment elements that form the same adjustment dimension in parallel increases the number of elements required, but at the same time also allows the use of smaller and/or simpler shaped adjustment elements. This also makes it easier to use structurally identical setting elements at different points or positions in/on the axial flow machine, although the contact surfaces of the assemblies at the respective connection points/contact surfaces are different are designed, whereby production costs and effort can be reduced.
  • a large number of the adjustment elements with different thicknesses are distributed on/over the (inner) circumference of the axial flow machine.
  • the affected surface can be adjusted using adjustment elements with different thicknesses that are individually determined and assigned for each affected position , can be compensated or offset.
  • the thicknesses of the setting elements preferably increase or decrease uniformly from setting element to setting element when the plurality of setting elements are distributed over an (inner) circumference of the axial flow machine.
  • the adjusting elements arranged distributed over the circumference of the respective axial flow machine components are designed in such a way that the thicknesses of these adjusting elements (continuously) decrease or increase in a circumferential direction.
  • thicker adjusting elements are used on one side of the circumference of the respective component than on the opposite side, so that the end faces of the adjacent assemblies, which are to be aligned relative to one another by the adjusting elements, are inclined relative to one another.
  • tolerance-related inclinations of individual components relative to one another can be reduced in terms of their effect on the axial flow machine.
  • a tolerance-related inclination of one stator half to the rotor can cause an inclined air gap between this stator half and the rotor, which would be significantly less wide on one side than on the opposite side.
  • the two screw-on surfaces can be oriented in the opposite direction by the same amount to one another at an angle, specifically by the same amount as the tolerance-related skewing. The undesired inclination in the stator and the inclination deliberately introduced by the adjustment elements thus compensate each other.
  • the two stator halves are connected to one another radially outside of the rotor.
  • stator halves are arranged in the assembled state in such a way that the radially outer ends of the stator housing of both stator halves, ie at the ends which are further away from the rotor shaft, enclose the rotor fastened to the rotor shaft. Furthermore, the stator halves are connected to one another at this position surrounding the rotor, preferably with the aid of at least one fastening screw.
  • the present invention also relates to an electrical machine arrangement which has an axial flow machine according to the invention and power electronics and/or a high-voltage storage device.
  • the axial flow machine described above is arranged within a housing of an electrical machine arrangement, which also has control and/or power electronics and/or a high-voltage storage device.
  • the housing is also part of a cooling system for the axial flow machine and is designed in such a way that cooling fluid can be supplied to the axial flow machine via the housing and/or the heat can be dissipated to the outside via the housing surfaces.
  • the housing protects the electrical machine and any electronics that may be present from external influences.
  • the invention also relates to an assembly method of the axial flow machine according to the invention for axially aligning a first assembly made up of a housing and a bearing, a second assembly made up of a first output-side stator half, a third assembly made up of a rotor and a rotor shaft and a fourth assembly with a second stator half.
  • a preparatory step actual axial distances on surfaces of the first, second and third assembly are determined.
  • the actual distances determined in this way are then compared with predetermined target distances and deviations of the actual distances from the respective target distances are determined therefrom.
  • the required thickness of the separate adjustment elements between the surfaces of the output-side stator half and the housing and between the surfaces of the shaft shoulder of the rotor shaft and the bearing can then be determined from these deviations.
  • deviations are determined by comparing certain actual distances between surfaces of different assemblies, consisting of a housing with a bearing, a first output-side stator half and a rotor with a rotor shaft of the axial flow machine, with the corresponding target values. These deviations are used to to calculate the necessary thicknesses of the adjustment elements at the contact position between the output-side stator half and the housing and the contact position between the shaft shoulder of the rotor shaft and the bearing.
  • actual axial distances are determined on surfaces of the first, second, third and fourth assemblies. Subsequently, the actual distances determined in this way are compared with predetermined desired distances and deviations of the actual distances from the respective desired distances are determined therefrom.
  • the required thickness of the adjustment element between the two stator halves is determined from the deviations and the selected thicknesses of the adjustment elements between the surfaces of the output-side stator half and the housing and between the surfaces of the shaft shoulder of the rotor shaft and the bearing, or the actual axial distances on surfaces of the first, third and fourth assembly determined.
  • the actual distances determined in this way are then compared with specified target distances and deviations of the actual distances from the respective target distances are determined.
  • the required thickness of the setting element between the housing and the output-side stator half is determined from the deviations and the selected thickness of the setting element between the surfaces of the shaft shoulder of the rotor shaft and the bearing.
  • the measurement and calculation processes of the assembly method described above, with which the axial dimensions of the assemblies of the axial flow machine are recorded and the required adjustment element thicknesses are calculated, can also be used to compensate for angular errors and/or waviness in addition to the axial tolerances.
  • the shape of the end faces or contact surfaces must be taken into account many points are determined and the alignment of these areas to each other is recorded. If the shape and location of the relevant surfaces of each assembly of the axial flow machine are known, it is also possible to calculate the correct or necessary axial thickness of the adjustment element for each circumferential position at which an adjustment element is to be inserted between two assemblies.
  • the assembly step described above serves to assemble the fourth assembly to the remaining three interconnected assemblies for the first embodiment and for the second embodiment of the axial flow machine according to the invention.
  • 1 is an axial section of an axial flux electric machine in a first embodiment.
  • 2 is an axial section of an axial flux electric machine in a second embodiment.
  • 3 is an isometric view of one of the stator halves with an annular contact surface.
  • FIG. 4 is an axial section of an electrical axial flow machine in a first embodiment according to FIG. 1, in which one stator half has an inclined position due to tolerances.
  • FIG. 5 is an isometric view of the two stator halves of the axial flux machine shown in FIG. 4 with adjustment elements of different thicknesses distributed over its circumference.
  • FIG. 6 is an illustration of an assembling method of an axial flux machine of the first embodiment with the contact surfaces of the assemblies.
  • FIG. 7 is an illustration of an assembling method of an axial flux machine of the second embodiment with the contact surfaces of the assemblies.
  • FIG. 1 shows an axial section of an electrical axial flow machine 1 according to the invention in an I arrangement.
  • the axial flux machine 1 has a stator 4 with a first stator half 41 and a second stator half 42 , in each of which at least one stator magnet 51 , 52 (eg electromagnet) is arranged, and a rotor 6 .
  • the two stator halves 41 , 42 are firmly screwed together radially outside of the rotor 6 .
  • the stator housing 43 of the output-side stator half 41 (on the right in this figure) is directly connected to a screwed supporting component, which is a part of a motor housing 3 in this machine arrangement shown.
  • the rotor 6 of the axial flux machine 1 which is arranged parallel between the two stator halves 41, 42, is screwed firmly to a rotor shaft 7 and is rotatably mounted on this relative to the stator 4, has rotor magnets (e.g. permanent magnets).
  • the bearing of the rotor shaft 7 is implemented using a fixed bearing/floating bearing principle.
  • the bearing shown on the left in the figure forms the loose bearing 9, which only transmits radial forces and no axial forces.
  • the floating bearing 9 does not transmit any significant axial forces and also does not contribute to an axial positioning of the rotor shaft 7 and therefore does not have to be taken into account for the air gap setting between the two stator halves 41, 42.
  • the bearing shown on the right in the figure forms the locator 8 of the rotor shaft 7, via which radial and axial forces are transmitted, as a result of which the axial alignment of the rotor shaft 7 and thus also the rotor 6 is made possible.
  • adjusting elements 10, 12, 11 for spacing the components appropriate.
  • adjustment elements 14 , 15 are each arranged on the axial side surfaces of bearing inner ring 81 of fixed bearing 8 , which rests against rotor shaft 7 . With the aid of these setting elements 10, 11, 12, 14, 15, the respective distances between the components can be set. In order to be able to set the air gap widths of the axial flow machine 1 to the right and left of the rotor 6, only one of the two setting options described above and the setting option between the stator halves 41, 42 are required.
  • FIG. 2 shows an axial section of an electrical axial flow machine 1 in an I arrangement in a further embodiment.
  • the axial flux machine 1 has a stator 4 with a first stator half 41 and a second stator half 42, in each of which at least one stator magnet 51, 52 (e.g. electromagnet) is arranged. and a rotor 6 , which is arranged parallel between the two stator halves 41 , 42 , is screwed firmly to a rotor shaft 7 and is supported by this so that it can rotate relative to the stator 4 .
  • a stator magnet 51, 52 e.g. electromagnet
  • both stator halves 41, 42 are screwed directly to part of a motor housing 3 via their stator housing 43 and have no mechanical connection or screw connection between the two stator halves 41, 42. Furthermore, the bearing of the rotor shaft 7 is implemented using the same fixed bearing/floating bearing principle according to the embodiment shown in FIG.
  • adjustment elements 10, 11, 13 are shown in Figure 2 on the contact surfaces between the rotor 6 and a shaft shoulder of the rotor shaft 7, on which the rotor 6 is arranged, and on the surfaces on which each stator housing 43 of the two stator halves 41 , 42 are in contact with the motor housing 3 attached. Furthermore, adjustment elements 14 , 15 are each arranged on the axial side surfaces of bearing inner ring 81 of fixed bearing 8 , which rests against rotor shaft 7 . With the help of these adjustment elements 10, 11, 13, 14, 15, the respective distances between the components can be adjusted.
  • FIG. 3 shows an isometric view of the second stator half 42 of the axial flux machine 1 according to the first embodiment with an annular contact surface, over the circumference of which four adjustment elements 12 consisting of two partial elements 17 each are arranged.
  • the stator half 42 In the center of the stator half 42 there is a through hole 20 through which the rotor shaft 7 can be guided.
  • the stator half 42 has, on the outermost circumference, a projection 22 that protrudes parallel to the through bore 20 and forms the annular surface for contacting the illustrated stator half 42 with the output-side stator half 41 .
  • eight holes/(through-)holes distributed evenly over the circumference of the stator half 42 are made on the annular surface.
  • the partial elements 17 of the adjustment elements 12 are elongate and each have two holes 24, via which they can be screwed to the holes in the annular surface of the stator half 42.
  • the execution of the adjustment elements 12 composed of assembled / stacked sub-elements 17 with Two holes 24 each make assembly easier on the one hand and prevent the adjustment elements 12 from slipping unintentionally on the other.
  • Figure 4 shows an axial section of an electrical axial flow machine 1 in I-arrangement in the first embodiment according to Figure 1, in which the two stator halves 41, 42 are bolted radially outside of the rotor 6, in which the stator housing 43 of the (in the figure on the left) However, the second stator half 42 is not arranged parallel along the rotor 6. Essentially, the inner components, which form the end face of the stator half 42 facing the rotor 6 , are aligned obliquely to the stator housing 43 enclosing the stator half 42 due to tolerances. The stator housing 43 also has the screwing surface for fastening this stator half 42 to the output-side stator half 41 .
  • stator housing 43 of the stator half 42 is arranged at an angle with respect to the rotor 6 .
  • FIG. 5 shows an isometric representation of the stator 4, which has a tolerance-related inclined position of one of the two stator halves 41, 42.
  • the two stator halves 41 , 42 have holes distributed evenly around their circumference and are aligned relative to one another via eight adjusting elements 12 distributed between them at the holes and have different thicknesses and are connected to one another via screws 25 . So that the screws 25 and the adjustment elements 12 can be seen better in Figure 5, the stator housing 42 shown on the left in the figure is not shown completely over half the circumference, i.e. the stator housing 42 has a break-out over approximately 180° of the circumference ( Area of parallel hatching lines) provided, whereby the screws 25 and adjustment elements 12 are exposed in this area.
  • the adjusting elements 12 are designed as circular rings or disks arranged around the screws 25 .
  • the adjusting elements 12 with different thicknesses are arranged over the circumference of the stator 4 in such a way that the thicknesses of the adjusting elements 12 range from a point (in the figure above) where the adjusting element 12 with the smallest thickness is attached to over the gradually increase the exposed circumference of the stator halves 41, 42 in this illustration and from a point (in the figure below) where the adjusting element 12 with the greatest thickness is attached, the thicknesses of the adjusting elements 12 decrease again along the remaining circumference.
  • these round adjustment elements 12 or in the case of adjustment elements 12 which are prevented from twisting by their contour one hole/bore is also sufficient to ensure simple assembly.
  • FIG. 6 shows an assembly process for the axial flow machine 1 shown in FIG. 1 of the first embodiment with two stator halves 41, 42 that can be connected to one another.
  • axial distances between different functionally relevant surfaces between four relevant assemblies are measured.
  • the motor housing 3 together with the fixed bearing 8, which forms a bearing point for the rotor shaft 7, represents the first assembly.
  • the actual axial distance MList is measured on this assembly and compared with the setpoint distance MLsoii.
  • the output-side stator half 41 is the second assembly on which two axial dimensions are determined.
  • the actual distance BKist between the stator surface, behind which the first stator magnets 51 are arranged, and the fastening surface, via which the output-side stator half 41 is connected to the motor housing 3, is measured, compared with a specified target distance BKsoii, and the deviation ABK is determined ..
  • the third assembly has the rotor 6 and the rotor shaft 7 with a first shaft shoulder 18 . Now the actual distance EDist between the shaft shoulder 18 of the rotor shaft 7, on which the bearing forces are later supported axially, and the rotor surface behind which the rotor magnets are arranged, is measured.
  • the rotor surface is here on the right side of the rotor 6, which faces the first stator half 41.
  • the actual distance EDist is compared with a setpoint distance EDsoii, from which the deviation AED is determined. Due to the deviations AML, ABK and AED of the three actual distances MList, BKist and EDist from the respective target distances MLsoii, BKsoii and EDsoii, the required thicknesses of the adjusting elements 11, 14 can be determined between the first starter half 41 and the motor housing 3 (at position KL) and between the shaft shoulder 18 and the fixed bearing 8 (at position DM). Both the width of the air gap between the rotor 6 and the first stator half 41 and the axial position of the axial flow machine 1 relative to the motor housing 3 can be adjusted via the two adjustment elements 10 , 11 .
  • the actual distances DGist, MList, KCist and J list are compared with the respective target distances DGsoii, MLsoii, KCsoii and J lsoii, the Deviations ADG, AML, AKC and AJI are determined and the thicknesses of the adjustment elements 10, 11 selected for the positions DM and LK are taken into account.
  • the thickness that the adjustment element 12 must have between the first and second stator halves 41 , 42 (at position CJ) can then be determined in order to ensure the required air gap width between the rotor 6 and the second stator half 42 .
  • the adjustment element thicknesses necessary for the assembly of these three assemblies are determined and then immediately these three assemblies are assembled together.
  • the axial dimension GC distance between the rotor side facing the second stator half 42 and the fastening surface of the output-side stator half 41
  • the axial dimension Jl must be measured and with the target dimensions be compared.
  • the correct adjustment element thickness can then be determined from this target/actual comparison which is arranged between the two stator halves 41 , 42 during assembly of the second stator half 42 (on the left in the view).
  • FIG. 7 shows an assembly process for the second embodiment of the axial flow machine 1, which is shown in FIG. Since this axial flux machine 1 differs from the previously described axial flux machine 1 only in the manner in which the fourth assembly with the second stator half 42 shown on the left is attached, only the measuring processes and adjustment processes that are required for the correct alignment of the second stator half 42 of the fourth assembly are discussed here required are. All measuring and setting operations that are possible or necessary for the alignment of the remaining assemblies correspond to the operations described above.
  • the actual distances DGist, MNist, and Plist are compared with the respective target distances DGsoii, MNsoii, and P lsoii, the deviation ADG, AMN , and API are determined and the thickness of the adjustment element 10 selected for the position DM is taken into account. Thereupon the thickness can be determined which the adjusting element 13 must have between the motor housing 3 and the second stator half 42 of the fourth assembly in order to ensure the required air gap width between the rotor 6 and the second stator half 42 of the fourth assembly.
  • the output-side stator half 41 and the rotor 6 can first be mounted on the motor housing 3 and then the resulting axial distance between the rotor side facing the second stator half 42 and the screwing surface on the motor housing 3 can be measured.
  • the air gap width between the rotor 6 and the second stator half 42 can then be set correctly by comparing the actual distances GNist and P st with the target distances GNsoii and P lsoii by determining the deviation AGN and API and then using an adjusting element 13 is arranged between the second stator half 42 shown on the left and the motor housing 3 (between surface P and surface N), the thickness of which is so deviates from the nominal thickness of these adjusting elements 13 that the deviation AGN and API are compensated.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Of Motors, Generators (AREA)

Abstract

L'invention concerne une machine à flux axial (1) comprenant un boîtier (3) dans lequel est disposé un stator (4) qui présente une première et une seconde moitié de stator (41, 42), lesdites moitiés de stator (41, 42) étant fixées au boîtier (3), et un rotor (6) qui est agencé entre les moitiés de stator (41, 42) et qui est en contact de manière à demeure en rotation avec un arbre de rotor (7), ledit arbre de rotor étant monté rotatif par rapport au stator (4) et au boîtier (3) par l'intermédiaire de points d'appui. Un élément de réglage séparé (11, 13) qui règle l'espacement axial entre le rotor (6) et les moitiés de stator (41, 42) est agencé entre au moins l'une des moitiés de stator (41, 42) et le boîtier (3). L'invention concerne également en outre un procédé d'installation permettant d'aligner axialement les ensembles les uns par rapport aux autres.
EP22801334.8A 2021-10-26 2022-10-24 Moteur à flux axial fixé à un boîtier et doté d'une fonction de réglage Pending EP4423892A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102021127749.3A DE102021127749A1 (de) 2021-10-26 2021-10-26 Gehäusefester Axialflussmotor mit Einstellfunktion
PCT/DE2022/100781 WO2023072337A1 (fr) 2021-10-26 2022-10-24 Moteur à flux axial fixé à un boîtier et doté d'une fonction de réglage

Publications (1)

Publication Number Publication Date
EP4423892A1 true EP4423892A1 (fr) 2024-09-04

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EP22801334.8A Pending EP4423892A1 (fr) 2021-10-26 2022-10-24 Moteur à flux axial fixé à un boîtier et doté d'une fonction de réglage

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US (1) US20240429800A1 (fr)
EP (1) EP4423892A1 (fr)
CN (1) CN118160207A (fr)
DE (1) DE102021127749A1 (fr)
WO (1) WO2023072337A1 (fr)

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DE102024120301A1 (de) * 2024-07-18 2026-01-22 Borgwarner Inc. Axialflussmaschine für einen hochvoltlüfter

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DE102007037842A1 (de) 2006-09-21 2008-04-03 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Elektrische Maschine
GB2545627B (en) 2015-10-16 2021-04-21 Yasa Ltd Axial flux machine arrangement
DE102020104857A1 (de) 2019-06-28 2020-12-31 Schaeffler Technologies AG & Co. KG Antriebsanordnung für eine elektrische Antriebsachse

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US20240429800A1 (en) 2024-12-26
DE102021127749A1 (de) 2023-04-27
WO2023072337A1 (fr) 2023-05-04
CN118160207A (zh) 2024-06-07

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