法国专利FR3056849A1 THERMAL DISSIPATOR FOR ROTATING ELECTRICAL MACHINE

专利PDF首页>>法国专利

专利附录

专利说明

权利要求

类似技术

同族专利

引用文献

法律状态

优先权

专利摘要:
The invention relates to a heat sink (10) for a rotating electrical machine comprising: - a first part (1) configured to be in contact with a coil head (105) of the rotating electrical machine, - a second part (2) , distinct from the first part (1), providing a heat exchange with an external environment, the second part (2) being thermally coupled to the first part (1), characterized in that the first part (1) is configured to be housed inside a hollow delimited by the coil head. Application to motor vehicles.
公开号:FR3056849A1
申请号:FR1659176
申请日:2016-09-28
公开日:2018-03-30
发明作者:Dominique Lhotellier；Guy Diemunsch
申请人:Institut Vedecom；
IPC主号:

专利说明:

Holder (s): INSTITUT VEDECOM.
Agent (s): PEUGEOT CITROEN AUTOMOBILES SA Public limited company.
(04) THERMAL DISSIPATOR FOR ROTATING ELECTRIC MACHINE.
FR 3 056 849 - A1 _ The invention relates to a heat sink (10) for a rotary electric machine comprising:
- a first part (1) configured to be in contact with a coil head (105) of the rotary electric machine,
- a second part (2), distinct from the first part (1), ensuring a heat exchange with an external environment, the second part (2) being thermally coupled to the first part (1), characterized in that the first part (1) is configured to be housed inside a recess delimited by the coil head.
Application to motor vehicles.
THERMAL DISSIPATOR FOR ROTATING ELECTRIC MACHINE
The field of the present invention is that of heat sinks and more particularly heat sinks for rotating electrical machines, such as generators or motors. More particularly, these electrical machines are intended to be installed on vehicles, in particular motor vehicles.
Rotating electrical machines such as generators or motors include a stator and a rotor. Windings forming coils are mounted on the stator and, for example, permanent magnets are attached to the rotor. The rotor is movable in rotation by means of a shaft. When the electric machine is a generator, the rotational movement of the rotor facing the stator coils makes it possible to generate electrical energy and when the electric machine is a motor, the rotation of the rotor through the coils generates mechanical energy.
In the case where these electric machines are used to set in motion an electric vehicle, it is advisable to minimize the weight of all the elements on board the vehicle because this weight directly impacts the autonomy of an electric source responsible for supplying the machine electric propulsion of the vehicle. This search for weight reduction results in an optimization of the compactness of this electric machine, while maintaining the same level of performance.
0 This situation leads to an increase in the density of heat produced by the electric machine. It should therefore be cooled to avoid overheating, which could lead to a reduction in performance or even destruction of the electric machine.
Among the components of the electric machine to be cooled, mention should be made of the coils, and more particularly the coil heads. These components are critical elements, which
5 dimension the general performance of the electric machine. With this reduction in size of the electrical machine in mind, it becomes particularly difficult to cool these components efficiently.
The invention solves this technical problem by proposing a heat sink for a rotating electrical machine comprising:
- a first part configured to be in contact with a coil head of the rotating electric machine,
- a second part, distinct from the first part, ensuring a heat exchange with an external environment, the second part being thermally coupled to the first part, characterized in that the first part is configured to be housed inside a hollow defined by the coil head.
By "thermally coupled" is meant that an exchange of calories is possible between the first and second parts. In other words, the first and the second part are mechanically linked and the second part participates in the cooling of the first part.
Such a heat sink housed inside a hollow formed by the coil head ensures maximum heat exchange surface, which offers improved cooling and is particularly suitable for an electric machine reduced in size. .
A rotating electrical machine is understood to be distinct from a linear electrical machine.
It can also be expected that the first part is configured to be in contact with several coil heads. Indeed, it could have a U shape for example.
According to different characteristics of the invention taken alone or in combination, it can be provided that:
- the first part and the second part extend from a common base, each of the parts extending from an opposite face of the common base. Thus the first part extends from a lower face of the common base, while the second part extends from an upper face of the common base.
- the common base is configured to be in contact with an upper surface of the coil head. The upper surface of the coil head is defined as the surface of the coil head farthest from the axis of rotation of the electric machine.
- the second part comprises at least one blade ensuring the heat exchange with the external environment. The presence of a blade increases the heat exchange surface of the second part with the external environment, the cooling is therefore improved.
- the second part comprises a plurality of blades extending along the longitudinal axis.
- The first part has at least one rounded face configured to be in contact with the coil head. Thus, this heat sink makes it possible to protect the wires forming the coils by having a rounded face, while offering a maximum surface area for heat exchange with the coil head in order to cool the coil heads. Indeed, whether the winding is distributed or dental, such a rounded face makes it possible not to break the wires during the winding step.
- the common base has a rounded face extending from a flat vertical face.
- each blade extends in a plane perpendicular to a plane in which the flat vertical face of the common base extends.
- the first part of the heat sink is hollow. Thus, this makes it possible to reduce the total mass as well as the parts subjected to heating due to the variable magnetic fields of the electric machine.
- The first part of the heat sink has a U-shaped section. In other words, the first part is hollow and open over its length. The section of the first part is taken in a section plane transverse to the first part, the section plane being contained in a reference frame defined by the longitudinal and transverse axes of the heat sink.
5 The invention also relates to a heat dissipation member for a rotary electrical machine, characterized in that it comprises several heat sinks as defined above.
Such a heat dissipation member allows, when installed on a rotating electrical machine, to ensure the cooling of several coil heads on one side of the electrical machine. This dissipation member is made in one piece.
According to different characteristics of the invention taken alone or in combination, it can be provided that:
- the heat sinks are connected together by their common bases. Thus the first and second parts of the heat sinks remain free, which ensures thermal exchanges. The connection between the heat sinks is understood to be a mechanical connection. Preferably, the heat sinks are molded or welded together.
- the dissipation organ is organized in a crown. By crown it is understood that the heat dissipation member has a multitude of heat sinks substantially forming a circle or a ring. The circular shape has the advantage of integrating well into a rotating electrical machine, at the longitudinal end of it. Such a crown allows, when installed on a rotating electric machine, to ensure the cooling of all of the coil heads on one side of the electric machine. This crown can be made in one piece.
- the common bases linked together delimit a central volume of the crown and have a polygonal section with N sides, where N is equal to the number of heat sinks included in the heat dissipation member. Of course, the volume
0 central of the crown is interrupted by the first parts of the heat sinks moving towards the center of the crown. The polygonal section is made according to a plane contained in a frame of reference defined by the vertical and transverse axes of the crown as defined by the trihedron. This geometry ensures that the bases of the heat sinks rest on the outer surfaces of the coil heads.
- each blade extends radially relative to a center of the crown.
This orientation of the blades allows on the one hand to optimize the number present on the crown and on the other hand not to interrupt a circulation of a cooling fluid which can pass along the electric machine.
The invention also relates to a rotating electric machine comprising:
- a plurality of coils,
a stator on which the plurality of coils is wound, the plurality of coils having coil heads, each coil head protruding longitudinally from the stator and having a recess,
- a mobile rotor inside the stator by means of a shaft, characterized in that it comprises at least one heat sink or at least one heat dissipation member as defined above.
Ideally, the electric machine comprises two dissipation members each organized in a crown, the crowns being pressed on each of the vertical outside faces of the stator of the electric machine.
According to different characteristics of the invention taken alone or in combination, it can be provided that:
- the stator includes an outer surface on which fins extend.
- the fins are aligned with at least one of the blades of the dissipator or of the dissipation member 15 such as these blades are defined above.
- the fins are aligned with each blade of the dissipator or with each blade of the heat dissipation member, as these blades are defined above.
- the rounded face of the first part of the heat sink is in contact with the hollow delimited by the coil head.
- the heat sink or the heat dissipation member is pressed against a vertical face of the stator, in particular an external vertical face of the stator.
Other characteristics, details and advantages of the invention will emerge more clearly on reading the description given below by way of indication in relation to the drawings in which:
FIG. 1 is a perspective view of a heat sink according to the invention,
FIG. 2 is a view of a front face of a heat dissipation member organized in a heat dissipation ring,
FIG. 3 is a perspective view of the rear face of the heat dissipation member of FIG. 2,
FIG. 4 is a perspective view of an electric machine equipped with several heat sinks according to the invention,
FIG. 5 is a perspective view of an electric machine equipped with two heat dissipation members, according to the invention, organized in a ring,
FIG. 6 is a partial view of the electric machine of FIG. 5,
FIG. 7 is a longitudinal section view of the electric machine of FIG. 5 without the flanges,
- Figure 8 is a longitudinal sectional view of the electric machine of the figure equipped with a jacket.
It should first be noted that the figures show the invention in detail to implement the invention, said figures can of course be used to better define the invention if necessary. Π it should be noted that these figures show several possible embodiments and variants of the invention without limiting the scope of the invention.
In the description which follows, relating to an individual heat sink, reference will be made to an orientation as a function of the longitudinal axes L, vertical V and transverse T, as they are defined arbitrarily by the trihedron L, V, T represented on the figure 1. The choice of the names of these axes is not limitative of the orientation that the individual heat sink can take in its application to a dissipation member or to a rotating electric machine.
FIG. 1 shows a heat sink 10, here individual, for a rotating electrical machine comprising a first part 1 configured to be in contact with a coil head of the rotating electrical machine. The heat sink 10 is said to be individual because it is intended, here, to be in contact with only one coil head. The heat sink 10 also includes a second part 2, distinct from the first part 1, ensuring heat exchange with the external environment. The first and second part 1, 2 are thermally coupled, this means that there is an exchange of calories between the first and second part 1, 2. The second part 2 therefore makes it possible to cool the first part L
The first part 1 and the second part 2 extend from a common base 3. More precisely, each of the parts 1, 2 extends from an opposite side of the common base 3. Thus the first part 1 extends from a lower face 31 of the common base 3, while the second part 2 extends from an upper face 32 of the common base 3. The lower face 31 and the upper face 32 are defined along the vertical axis V.
The first part 1 is configured to be housed inside a hollow delimited by the coil head. For this, the first part 1 can be in the form of a finger 11 having a cross section comprising an arc of a circle. Thus, the finger 11 comprises a rounded face 12 and a flat vertical face 13. The rounded face 12 is the face intended to come into contact with the coil head, such a rounded face 12 makes it possible to offer both a surface d maximum heat exchange and protection of the wires forming the coils during the winding step. In the example of embodiment shown, the finger 11 has here a semicircular cross section, the cross section being produced according to a plane defined by the longitudinal axis L and the transverse axis T.
The first part 1 can be hollow in order to reduce the mass of the heat sink 10 as well as the masses subjected to heating due to the variable magnetic fields of the electric machine. In addition to being hollow, the first part 1 can have a U-shaped section by being open on its flat vertical face 13, as will be described below.
The common base 3, more particularly its underside 31, is configured to be in contact with an upper surface of the coil head.
According to the exemplary embodiment illustrated in FIG. 1, the base 3 has a cross section comprising an arc of a circle, the cross section being produced according to a plane defined by the longitudinal axis L and the transverse axis T. Here, La base 3 has a semicircular cross section. Thus, the base 3 comprises, in addition to its lower face 31 and its upper face 32, a rounded face 33 extending from a flat vertical face 34. The flat vertical face 34 extends in a plane B defined by the vertical axis V and the transverse axis T.
The semicircles forming the first part 1 and the base 3 of the heat sink 10 extend from the same center and have different radii. Indeed, the semicircle delimiting the finger 11 has a radius less than the semicircle delimiting the base 3.
Furthermore, the second part 2, ensuring the heat exchange with the external environment, here comprises a plurality of blades 25. These blades 25 make it possible to increase the heat exchange surface of the second part 2 with the external environment , cooling is therefore improved. Each strip 25 extends in a plane LM defined by the vertical axis V and the longitudinal axis L. The plane LM is preferably perpendicular to the plane B in which the flat vertical face 34 of the base 3 extends. Without limitation, the LM plane could just as well be parallel or oblique to plane B.
According to the embodiment shown in FIG. 1, the blades 25 have variable lengths along the longitudinal axis L of the heat sink 10. More precisely, the blades 25 follow the arc of a circle of the base 3. In other words , the blades 25 extend from the rounded face 33. In addition, the blades 25 extend, in length, partially on the base 3. In fact, starting from the rounded face 33, the blades 25 interrupt before reaching the vertical face 34. It should also be noted that the blades here have a constant height along the vertical axis V of the heat sink 10. Of course, the blades 25 could have different heights between them.
Of course, to ensure its role as a dissipator, the heat sink 10 can be made of a thermally conductive material which heats up little under the effect of a variable magnetic field. Such a material provides improved heat transfer. This material can for example be aluminum, non-magnetic steel, titanium or an alloy based on these metals or else a synthetic material loaded with heat-conducting fibers.
FIG. 2 shows a plurality of heat sinks 10 assembled together to form a dissipation member 40. Each individual heat sink 10 is connected to the neighboring heat sinks 10 by its base 3. Thus, the first part 1 and the second part 2 of each heat sink 10 forming part of the dissipation member remain free, which ensures thermal cooling of the coil heads. Of course, the heat sinks 10 could be interconnected by the first part 1 or the second part 2.
The bases 3 are interconnected by a mechanical type connection, that is to say that they can for example be welded or be molded together. Thus, the dissipation member 40 is in one piece, that is to say made in one piece.
According to the embodiment illustrated in FIGS. 2 and 3, the dissipation member 40 is organized in a ring 50. By ring 50, it is understood that the heat dissipation member 40 has a multitude of heat sinks 10 forming substantially a closed circle. Here, the heat dissipation member 40 comprises twelve heat sinks 10 organized in a crown 50. The circular shape of the crown 50 has the advantage of being well integrated into a rotating electric machine. Such a crown 50 makes it possible, when installed on a rotating electrical machine, to ensure the cooling of all of the coil heads on one side of the electrical machine. This crown 50 can be made in one piece or in two blocks in order to facilitate its installation in the electric machine. It should be noted that the heat dissipation member 40 could take any other form, such as a square, an arc, or a triangle as required.
In the description which follows, the relative concepts such as “interior” or “exterior” are defined with respect to a center C of the crown 50. The concept of “interior” according to this reference signifies that the element considered is located or is directed radially towards the inside of the crown 50, towards its center C, while the concept of "outside" according to this reference signifies that the element in question is located or is directed radially towards the outside of the crown 50 by relative to the center C. In the same way as the heat sink 10, reference will be made to an orientation as a function of the longitudinal L, vertical V and transverse T axes, as they are defined arbitrarily by the trihedron L, V, T represented in FIG. 2 or 3. The choice of names for these axes is not limiting of the orientation that the crown 50 can take in its application to the rotary electric machine.
As is particularly visible in FIG. 3, each base 3 has a rectangular cross section, along a plane defined by the longitudinal axis L and the transverse axis T. The base 3 can then have an upper face 31 and a lower face 32 of rectangular shape.
The bases 3 interconnected define a central volume 51 of the crown 50. The first parts 1 of each heat sink 10 open into this central volume 51. In addition, the bases 3 define a polygonal section with N sides, where N is equal to the number of heat sinks 10 included in the dissipation member 40. Preferably, the number N of sides of the polygonal section can also be equal to the number of teeth of the stator. The polygonal section is produced according to a plane contained in a frame of reference defined by the vertical and transverse axes of the crown as defined by the trihedron of FIGS. 2 and 3. Such a geometry makes it possible to ensure that the bases 3 of the dissipators thermal 10 rest on the outer surfaces of the coil heads. In the example shown, the vertical polygonal section has twelve sides.
The blades 25 extend, here, radially with respect to the center C of the crown 50 and follow an axial direction of the crown 50, that is to say along the longitudinal axis L. This orientation of the blades 50 allows on the one hand to optimize the number present on the crown 50 and on the other hand not to interrupt a circulation of a cooling fluid which can pass along the electric machine. Of course, the blades 25 could be oriented differently. Indeed, the blades 25 could extend along the transverse axis T of the crown 50 or be oblique with respect to the longitudinal axis L of the crown 50.
In addition, the blades 25 have, here, all identical lengths along the longitudinal axis L of the crown 50 and extend completely on the base 3. Of course, the blades 25 could extend partially on the base 3 and have different lengths. It should also be noted that the blades have, here, a constant height along the vertical axis V of the crown 50. Of course, the blades 25 could have different heights between them.
As is particularly visible in FIG. 3, the first part 1 has a U-shaped cross section while being completely open on its flat vertical face 13, the cross section being produced in a plane defined by the longitudinal axis L and the axis transverse T for a first part 1 extending along the vertical axis V. This U-shaped cross-section allows a reduction in the masses and makes it possible to form the rounded face 12 having the same curvature as the hollow formed by the coil heads.
We will now describe a rotary electrical machine 100 comprising, according to a first embodiment illustrated in FIG. 4, individual heat sinks 10.
In the following description, the relative concepts such as "interior", "lower", "exterior" or "upper" are defined with respect to an axis of rotation R defined as the axis around which rotates a shaft 125 driving a rotor 120 of the electric machine. The concept of "lower" according to this reference means that the element considered is located or moves radially towards the interior of the electric machine, approaching the axis of rotation R, while the concept of "higher" according to this reference means that the element considered is located or moves radially outwards the electric machine, away from the axis of rotation R. The concept of "interior" according to this reference means that the element considered is located or moves longitudinally towards the inside of the electric machine, approaching a center of the electric machine, while the concept of “outside” according to this reference signifies that the element considered is located or is directs the electric machine longitudinally outwards, away from the center of the electric machine. A longitudinal axis is defined as the axis along which the electric machine extends in its length, the longitudinal axis and the axis of rotation R of the electric machine are then combined. The longitudinal axis L previously described for the heat sink (s) and the axis of rotation R of the machine are also combined.
Three reference planes are defined: a vertical plane VI, a radial plane Rl and a tangential plane Tl. The vertical plane VI is perpendicular to the axis of rotation R of the rotor 120. In other words, the vertical plane VI can correspond to a vertical face of the stator 110. The radial plane R1 is parallel to the axis of rotation R of the rotor 120 and passes through it. In other words, the radial plane R1 can correspond to an exposed face of the electric machine during a longitudinal cut. The tangential plane Tl is also parallel to the axis of rotation R of the rotor 120 but does not pass through the axis of rotation R of the rotor 120. The tangential plane Tl would be exposed if the stator 110 were cut lengthwise slightly below its outer surface.
FIG. 4 shows a stator 110 and a rotor 120 of a rotary electric machine 100. Windings forming coils 102 are mounted on the stator 110 and, for example, permanent magnets 123 are fixed to the rotor 120. The rotor 120, produced at from a stack of rotor sheets 121, is rotatable by means of a shaft 125 around the axis of rotation R.
In this exemplary embodiment, a stack of sheets 112 forms the stator 110. The sheets 112 comprise at least one fin 114 and at least one tooth 115. Here, each sheet 112 comprises four fins 114, the sheets 112 are therefore stacked so that the fins 114 of a given sheet 112 are offset from the adjacent sheets 112. In addition, each sheet 112 includes a number D of teeth 115, the number D being equal to the number of coils. Thus, in the embodiment shown, each sheet 112 includes twelve teeth 115.
At the longitudinal ends of the stator 110, individual heat sinks 10 are pressed against the two end sheets 112 of the stator 110, more precisely on the external vertical faces of the stator 110. The wires forming the coils 102 are then wound around the teeth 115 present on the sheets 112 of the stator 110 passing over the first part 1 of the heat sink 10. More specifically, the wires forming the coils 102 come into contact with the rounded face 12 of the first part 1. This rounded face 12 then makes it possible to do not break the wires when winding. In fact, the wires forming the coils 102 can be wound in a so-called dental manner, that is to say around a single tooth of the stator 110, or in a so-called distributed manner, where the coils are wound around several teeth 115 of the stator 110. In all cases, the formation of excessively creases is avoided, which risk damaging the wires of the coil head.
At the ends of the stator 110, the winding of the coils 102, dental or distributed, allows the formation of coil heads 105. Each coil head 105, wound around an individual dissipator 10, forms a hollow 104 in which the first is housed part 1, here finger 11, of the individual dissipator 10. In this embodiment, all the coil heads 105 are equipped with an individual dissipator 10. Of course, it could be otherwise with one coil head 105 on two or on three equipped with an individual dissipator 10, this would further reduce the mass of the electric machine.
Furthermore, it should be noted that the lower face 31 of the base 3 of each individual dissipator 10 rests on the upper surface 106 of each of the coil heads 105. The vertical end face 14 of the first part 1, as for it is flush with the lower surface 107 of the coil heads 105.
We will now describe a rotary electrical machine 100 comprising, according to a second embodiment illustrated by FIGS. 5 to 8, at least one heat dissipation member 40. More particularly, the heat dissipation member 40 is presented here under the shape of a crown 50. The electric machine 100 then comprises two dissipation members 40 organized in crowns 50, each crown 50 is then pressed on each of the external vertical faces of the stator 110, on either side of the electric machine 100 along the axis of rotation R.
For the readability of FIGS. 5 to 8, the stator 110 has here been shown in a single piece, but it could just as easily be produced from a stack of sheets
112.
As shown in FIG. 5, the shaft 125 driving the rotor in rotation is kept in rotation by means of a rotation bearing 101, the latter possibly being, for example, a needle ball bearing or a friction bearing. The rotation bearing 101 is in turn supported by a flange 103 of the electric machine 100. An electric machine 100 can then include two flanges 103 and two rotation bearings 101 located at the two longitudinal ends of the electric machine 100. Each ring 50 is therefore clamped between one of the flanges 103 and the stator 110.
It should be noted that the blades 25 of the crown 50 extend well in a radial plane of the electric machine 100 or of the crown 50, allowing a circulation of a fluid along the electric machine 100.
For more visibility, FIG. 6 represents only the stator 110 on which the coils 105 and the two rings 50 are mounted. It can then be noted that the first parts 1 are hollow and have a U-shaped cross section. Thus, such a section U-shaped creates a space 55 between the first part 1 and the tooth 115 of the stator 110.
It is also clearly visible that the polygonal section of the crown 50, here at 12 sides, formed by the bases 3 of the heat sinks 10, rests on the upper surface 106 of the coil heads 105 and that the blades 25 of the crown 50 s extend well in a radial plane of the electric machine 100 or of the crown 50. This is particularly clearly visible in FIG. 7, which represents a longitudinal section of the electric machine 100 shown without its flanges 103.
FIG. 7 shows this longitudinal section made in a radial plane of the rotary electric machine 100. This section makes it possible to demonstrate that the first parts 1 of the crown 50 arrive flush with the internal surface 107 of the coil heads 105. In other words, the first parts 1 do not extend into an air gap 111, the latter being defined as the space between the stator 110 and the rotor 120.
FIG. 8 represents an alternative embodiment of the electric machine 100 which is here equipped with a jacket 108. This electric machine 100 comprises two dissipation members 40 in a crown 50, but could just as easily include individual dissipators 10.
FIG. 8 shows a longitudinal section passing through the axis of rotation R of the electric machine 100. The jacket 108 covers the flanges 103 and the stator 110. The covering is done along the axis of rotation R in which the electric machine 100 stretches. This jacket 108 makes it possible to confine the flow of the cooling fluid whether it is liquid or gaseous, so as to concentrate it on the external peripheral wall of the stator.
The blades 25 of the crown 50 are oriented lengthwise of the electric machine 100 and are slightly spaced from the jacket 108. Such an arrangement of the blades 25 facilitates the circulation of a fluid entering through a sleeve 109 and leaving through another sleeve 109 located, in this embodiment, at a diametrically and longitudinally opposite end of the jacket 108 covering the electric machine 100. The circulation of the coolant from one sleeve 109 to the other also allows the stator to cool. 110 and this can be improved with the presence of fins on its surface.
The foregoing description clearly explains how the invention achieves the objectives it has set for itself, and in particular to provide an efficient heat sink that adapts to an electric machine reduced in size. The invention finds many advantageous applications, whether it is an individual heat sink or a heat dissipation member, organized in a closed ring or in a plurality of heat sinks forming angular sectors of the electric machine. rotating.
Of course, various modifications can be made by those skilled in the art to the individual heat sink or to the heat dissipation member which have just been described by way of nonlimiting example, as soon as one implements at least a first part configured to be housed inside a hollow delimited by the coil head, at least a second part, distinct from the first part, ensuring a heat exchange with an external environment, with the first part and the second part thermally coupled.
In any event, the invention cannot be limited to the embodiments specifically described in this document, and extends in particular to all equivalent means and to any technically effective combination of these means.

权利要求:
Claims (18)
[1" id="c-fr-0001]
1. Heat sink (10) for a rotating electrical machine (100) comprising:
- a first part (1) configured to be in contact with a coil head (105) of the rotary electric machine (100),
- a second part (2), distinct from the first part (1), ensuring a heat exchange with an external environment, the second part (2) being thermally coupled to the first part (1), characterized in that the first part (1) is configured to be housed inside a recess (104) delimited by the coil head (105).
[2" id="c-fr-0002]
2. Heat sink according to the preceding claim, characterized in that the first part (1) and the second part (2) extend from a common base (3), each of the parts (1, 2) s' extending from an opposite face of the common base (3).
[3" id="c-fr-0003]
3. Heat sink according to the preceding claim, characterized in that the common base (3) is configured to be in contact with an upper surface (106) of the coil head (105).
[4" id="c-fr-0004]
4. Heat sink according to any one of the preceding claims, characterized in that the second part (2) comprises at least one strip (25) ensuring the heat exchange with the external environment.
[5" id="c-fr-0005]
5. Heat sink according to any one of the preceding claims, characterized in that the first part (1) has at least one rounded face (12) configured to be in contact with the coil head (105).
[6" id="c-fr-0006]
6. Heat sink according to any one of the preceding claims taken in combination with claim 2, characterized in that the common base (3) has a rounded face (33) extending from a flat vertical face (34 ).
[7" id="c-fr-0007]
7. Heat sink according to the preceding claim taken in combination with at least claim 4, characterized in that each strip (25) extends in a plane (LM) perpendicular to a plane (B) in which the face extends vertical plane (34) of the common base (3).
[8" id="c-fr-0008]
8. Heat sink according to any one of the preceding claims, characterized in that the first part (1) is hollow.
[9" id="c-fr-0009]
9. Heat sink according to any one of the preceding claims, characterized in that the first part (1) has a U-shaped section.
[10" id="c-fr-0010]
10. Heat dissipation member (40) for a rotary electrical machine (100), characterized in that it comprises several heat sinks (10) defined according to any one of the preceding claims.
[11" id="c-fr-0011]
11. Body according to the preceding claim taken in combination with claim 2, characterized in that the heat sinks (10) are interconnected by their common bases (3).
[12" id="c-fr-0012]
12. Body according to claim 10 or 11, characterized in that it is organized in a crown (50).
[13" id="c-fr-0013]
13. Body according to the preceding claim taken in combination with claim 11, characterized in that the common bases (3) connected together delimit a central volume (51) of the crown (50) and have a polygonal section with N sides , where N is equal to the number of heat sinks (10) included in the heat dissipation member (40).
[14" id="c-fr-0014]
14. Body according to claim 12 or 13 taken in combination with at least claim 4, characterized in that each blade (25) extends radially with respect to a center (C) of the crown (50).
[15" id="c-fr-0015]
15. Rotating electric machine (100) comprising:
- a plurality of coils (102),
- a stator (110) on which the plurality of coils (102) is wound, the plurality of coils (102) having coil heads (105), each coil head (105) protruding longitudinally from the stator (110) and having a hollow (104),
- a rotor (120) movable inside the stator (110) by means of a shaft (125),
5 characterized in that it comprises at least one heat sink (10) defined according to any one of claims 1 to 9 or at least one heat dissipation member (40) defined according to any one of claims 10 to 14 .
[16" id="c-fr-0016]
16. Machine according to the preceding claim, characterized in that the stator (110) 10 comprises an outer surface on which fins (114) extend.
[17" id="c-fr-0017]
17. Machine according to claim 15 or 16 taken in combination with claim 5, characterized in that the rounded face (12) of the first part (1) of the heat sink (10) is in contact with the recess (104) delimited by the coil head
15 (105).
[18" id="c-fr-0018]
18. Machine according to any one of claims 15 to 17, characterized in that the heat sink (10) or the heat dissipation member (40) is pressed against a vertical face of the stator (110).
1/8

类似技术:

公开号 | 公开日 | 专利标题

FR3056849A1|2018-03-30|THERMAL DISSIPATOR FOR ROTATING ELECTRICAL MACHINE

EP1627151B1|2019-06-12|Ventilation device, especially for a motor vehicle alternator

FR2819350A1|2002-07-12|PERFECTED ROTATING MACHINE FOR MOTOR VEHICLES

EP3516757B1|2020-09-09|Electrical machine cooled by a dual-flow impeller

FR2908941A1|2008-05-23|METHOD FOR PRODUCING A FAN DEVICE FOR A ROTATING ELECTRIC MACHINE AND A FAN DEVICE FOR CARRYING OUT SAID METHOD

FR3056353B1|2019-07-26|VENTILATED ROTOR

FR3056356B1|2019-07-26|SLEEVE AND SHAFT OF ELECTRIC MACHINE

WO2016132061A1|2016-08-25|Electrical rotating machine with optimised cooling

WO2018020188A1|2018-02-01|Rotary electric machine provided with a stator having a hairpin winding

FR3063201A1|2018-08-24|ROTATING ELECTRIC MACHINE INVERTER WITH IMPROVED COOLING

FR3038793A1|2017-01-13|ROTATING ELECTRIC MACHINE WITH LUBRICANT TANK FOR LUBRICATION OF BEARING

EP3320604B1|2022-03-02|Rotary electric machine equipped with a means of adjusting the angular position of the shaft

FR3087595A1|2020-04-24|MAGNETIC ASSEMBLY SHEET COMPRISING COOLING CHANNELS, MAGNETIC ASSEMBLY, AND ROTATING ELECTRIC MACHINE INCLUDING A STACK OF SUCH MAGNETIC ASSEMBLY SHEETS

FR2875965A1|2006-03-31|Electrical rotating machine for use as e.g. alternator-starter, in motor vehicle, has claw rotor with internal paths for passage of cooling gaseous fluid e.g. air, and extending inside rotor between outputs and inputs of rotor

FR3082373A1|2019-12-13|ROTATING ELECTRIC MACHINE STATOR

WO2018197624A1|2018-11-01|Rotating electrical machine with optimized cooling

FR3088503A1|2020-05-15|ROTOR FAN FOR ROTATING ELECTRIC MACHINE

FR3088502A1|2020-05-15|ROTATING ELECTRIC MACHINE WITH A PHASE OUTPUT GUIDING COMB

FR3103653A1|2021-05-28|Rotating electric machine with axial stator locking

WO2021105631A1|2021-06-03|Liquid-cooled electrical machine

FR3062755A1|2018-08-10|IMPROVED ASSEMBLY OF ROTOR OF ROTATING ELECTRICAL MACHINE

FR3059171A1|2018-05-25|PULLEY ASSEMBLY FOR ROTATING ELECTRICAL MACHINE

WO2017009548A1|2017-01-19|Rotary electric machine with optimized cooling

FR3038792A1|2017-01-13|ROTATING ELECTRICAL MACHINE WITH MODIFIED BEARING

FR3062756A1|2018-08-10|ROTOR OF ROTATING ELECTRIC MACHINE WITH BALANCING HOLES

同族专利:

公开号 | 公开日

JP2019530425A|2019-10-17|

US20200021163A1|2020-01-16|

CN109937528A|2019-06-25|

FR3056849B1|2020-11-13|

EP3520205A1|2019-08-07|

WO2018060565A1|2018-04-05|

引用文献:

公开号 | 申请日 | 公开日 | 申请人 | 专利标题

DE596337C|1930-03-25|1934-04-30|Siemens Schuckertwerke Akt Ges|Device for dissipating the heat from the coil heads of the stator winding of electrical machines, which are surrounded on all sides with cement|

JP2006087172A|2004-09-14|2006-03-30|Hitachi Industrial Equipment Systems Co Ltd|Stator for rotating electric machine|

JP2008125153A|2006-11-08|2008-05-29|Mitsubishi Electric Corp|Rotary electric machine|

DE102014223483A1|2014-11-18|2016-05-19|Siemens Aktiengesellschaft|Winding carrier|

DE102016103408A1|2015-03-06|2016-09-08|Fanuc Corporation|STATOR SUPPLIED WITH AN EXTERNAL CYLINDER AND MOTOR|FR3093250A1|2019-02-26|2020-08-28|Safran|Enhanced Cooling Electric Machine Coil|DE10244428A1|2002-09-24|2004-06-17|Siemens Ag|Electrical machine with a cooling device|

US20090058206A1|2007-08-29|2009-03-05|Ronald Dean Bremner|Motor winding assembly|

JP2009130958A|2007-11-20|2009-06-11|Mitsubishi Electric Corp|Rotating electric machine|

FR2971376B1|2011-02-08|2014-03-07|Renault Sa|COIL COOLING DEVICE FOR MOTOR VEHICLE ELECTRIC MOTOR COILS|

JP2013090391A|2011-10-14|2013-05-13|Nippon Soken Inc|Rotary electric machine|

CN204633497U|2012-09-28|2015-09-09|株式会社安川电机|Coil, electric rotating machine and linear electric motors|

JP6312111B2|2016-02-03|2018-04-18|三菱電機株式会社|Rotating electric machine|FR3093252A1|2019-02-21|2020-08-28|Safran|Electric machine winding with improved cooling|

EP3966915A1|2019-05-08|2022-03-16|Universiteit Gent|An electrical machine comprising a cooling device|

EP3852244A1|2020-01-20|2021-07-21|Hamilton Sundstrand Corporation|Electrical machines|

EP3940930A1|2020-07-16|2022-01-19|General Electric Renovables España S.L.|Cooling of electrical machines|

法律状态:
2017-08-21| PLFP| Fee payment|Year of fee payment: 2 |

2018-03-30| PLSC| Publication of the preliminary search report|Effective date: 20180330 |

2018-08-22| PLFP| Fee payment|Year of fee payment: 3 |

2019-08-20| PLFP| Fee payment|Year of fee payment: 4 |

2020-08-19| PLFP| Fee payment|Year of fee payment: 5 |

2021-08-19| PLFP| Fee payment|Year of fee payment: 6 |

优先权:

申请号 | 申请日 | 专利标题

FR1659176|2016-09-28|

FR1659176A|FR3056849B1|2016-09-28|2016-09-28|THERMAL SINK FOR ROTATING ELECTRIC MACHINE|FR1659176A| FR3056849B1|2016-09-28|2016-09-28|THERMAL SINK FOR ROTATING ELECTRIC MACHINE|

PCT/FR2017/052485| WO2018060565A1|2016-09-28|2017-09-18|Heat sink for rotary electric machine|

JP2019537892A| JP2019530425A|2016-09-28|2017-09-18|Heat sink for rotating electrical machine|

EP17780821.9A| EP3520205A1|2016-09-28|2017-09-18|Heat sink for rotary electric machine|

CN201780060376.3A| CN109937528A|2016-09-28|2017-09-18|Radiator for rotating electric machine|

US16/336,380| US20200021163A1|2016-09-28|2017-09-18|Heat sink for rotary electric machine|

[返回顶部]