EP4260444A1 - Moteur electrique sans balais a membrane regulatrice de pression interne - Google Patents
Moteur electrique sans balais a membrane regulatrice de pression interneInfo
- Publication number
- EP4260444A1 EP4260444A1 EP21787443.7A EP21787443A EP4260444A1 EP 4260444 A1 EP4260444 A1 EP 4260444A1 EP 21787443 A EP21787443 A EP 21787443A EP 4260444 A1 EP4260444 A1 EP 4260444A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- electric motor
- brushless electric
- tube
- power circuit
- housing
- 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
Links
Classifications
-
- 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
- H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/30—Structural association with control circuits or drive circuits
- H02K11/33—Drive circuits, e.g. power electronics
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/22—Arrangements for cooling or ventilating by solid heat conducting material embedded in, or arranged in contact with, the stator or rotor, e.g. heat bridges
- H02K9/227—Heat sinks
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2205/00—Specific aspects not provided for in the other groups of this subclass relating to casings, enclosures, supports
- H02K2205/09—Machines characterised by drain passages or by venting, breathing or pressure compensating means
Definitions
- the present invention relates to the field of vehicle heat treatment modules. More particularly, the invention relates to brushless electric motors and heat treatment module fan motor units equipped with brushless electric motors.
- a brushless electric motor for a fan motor assembly generally comprises a rotor and a stator surmounting an electronic box.
- This electronic box houses electronic circuits making it possible to electrically supply the stator and/or the rotor from a power supply of the vehicle, in which the motorized fan unit is used. These electronic circuits also make it possible to control the operating parameters of the brushless electric motor.
- the electronic circuits being sensitive to the presence of water as well as to dust, the boxes must be closed in a sealed manner. Thus, a seal is placed between the two shells to ensure the tightness of the electronic box once manufactured.
- a disadvantage of such a solution is that the membrane can be damaged during the life of the product, especially when the vehicle is cleaned with a pressure washer.
- the pressure of the liquid water risks tearing the membrane, which has the consequence of allowing the liquid water to penetrate inside the electronic box and cause a breakdown which risks immobilizing the vehicle.
- the object of the present invention is to respond at least in part to the above problems and also to lead to other advantages by proposing a new type of brushless electric motor.
- the present invention proposes a brushless electric motor intended to rotate a propeller of a fan motor unit, in particular of a heat exchanger of a heat treatment module, of a vehicle.
- the brushless electric motor comprises at least two electromagnetic elements, at least one of the electromagnetic elements being equipped with at least two coils, a box defining an interior volume in which are housed a servo circuit and a power circuit, the circuit power being configured to electrically connect a power supply of the vehicle to the coils, the electrical connection between the power supply of the vehicle and the coils being placed under the control of the servo circuit.
- the power circuit comprises at least one tube configured to place the internal volume of the box in air communication with an external environment of the box, the tube passing through a wall of the box, the power circuit comprising at least one breathable membrane arranged to close the tube , the breathable membrane being impermeable to liquid water and permeable to at least one gas, in particular air.
- the interior volume of the box contains the servo circuit and the control circuit.
- the tube of the control circuit passes through the upper wall and allows communication between the interior volume and an exterior environment of the box.
- the breathable membrane closing the tube allows the exchange of gases between the interior volume of the case and the exterior environment of the case and blocks the entry into the interior volume of liquids coming from the environment. Therefore, the pressure inside the case can balance with the pressure of the external environment.
- the water vapor trapped in the box can escape through the tube, thus avoiding the formation of liquid water on the power circuit and/or the servo circuit when the motor cools down after use and/or when the climatic conditions change.
- the power circuit comprises a support carrying at least one electrically conductive track and at least one electronic component, the tube being arranged on the support.
- the electrically conductive track has a section greater than or equal to 4 mm 2 seen in projection in a plane perpendicular to a main direction of current conduction.
- the electrically conductive track has the shape of a bar with a rectangular or substantially rectangular section.
- the electronic component is an inverter.
- the inverter makes it possible to generate an alternating current from the direct current present on the vehicle.
- Such an inverter can be formed by a single electronic component but it can also be the assembly of several electronic components carried by the support of the power circuit.
- the tube is integral with the support. It should be understood here, as well as in all that follows, by “made from material”, that the elements made from material form one and the same piece, and therefore are made of the same material or materials. This part can be obtained for example by molding or by injection. These parts made from material are thus inseparable without destroying one and/or the other of these parts.
- the support comprises at least one synthetic material.
- the breathable membrane is then more easily attached to the support.
- the polymer is chosen from the group comprising a PPS, a PPL and their mixture, regardless of the percentage of fiberglass added.
- At least part of the tube protrudes from the box.
- At least a part of the tube extends in the direction of at least one of the electromagnetic elements of the brushless electric motor arranged outside the box.
- One of the electromagnetic elements at least partially protects the inlet of the tube from splashes of elements that could damage the membrane
- the at least one of the electromagnetic elements is a stator or a rotor.
- the tube comprises at least one inner end placed in the interior volume of the box and one outer end placed in the external environment of the box, the membrane being placed at any one of these ends.
- the membrane is placed at the inner end. The membrane is even better protected from external aggressions.
- the membrane is welded and/or glued to a contour of the inner end.
- the tube passes through the wall of the box by passing through a hole in the wall, a cavity extending from the tube to the edge of the hole in the wall through which the tube passes, the cavity comprising a sealing.
- the tightness of the case is not broken by any space between a contour of the hole and a wall of the tube.
- the cavity is filled, preferably entirely, with the sealing element.
- the sealing element comprises at least one polymer.
- the polymer is chosen from the group comprising a polysiloxane, a polyurethane, and their mixture.
- the sealing element has a Young's modulus less than or equal to 3GPa.
- the polymer is then sufficiently flexible to deform during thermal expansion or thermal contraction of the case and/or the tube, for example due to environmental conditions.
- the box is a heat sink configured to dissipate calories generated by the servo circuit and/or the power circuit in the external environment of the box.
- the case comprises a material chosen from among aluminum, copper, a heat-conducting polymer and a mixture thereof.
- the box also acts as protection against electromagnetic fields.
- the invention further provides a motor-fan unit of a heat treatment module, in particular of at least one exchanger, of a vehicle, comprising a propeller and at least one brushless electric motor according to the invention, the electric motor being connected to the propeller by a shaft and being configured to drive the propeller in rotation.
- the invention also relates to a subject of a heat treatment module of a vehicle, comprising at least one heat exchanger and at least one brushless electric motor according to the invention or at least one fan motor unit according to the invention.
- Figure 1 is a schematic sectional view of a heat treatment module comprising a motor-fan unit according to the invention.
- FIG. 2 is a schematic perspective view of a brushless electric motor according to the invention in the assembled configuration as shown in Figure 1;
- FIG. 3 is a schematic perspective view of a casing of the brushless electric motor of figure 2 without a rotor, the casing being traversed by a tube according to the invention;
- FIG. 4 is a schematic perspective view of a power circuit comprising the tube of Figure 3;
- Figure 5 is a sectional view in a longitudinal and vertical plane at the level of the tube passing through the box of figure 3.
- a direction of a longitudinal axis L, a direction of a transverse axis T, and a direction of a vertical axis V are represented by a trihedron (L, T, V) in the figures.
- a horizontal plane as being a plane perpendicular to the vertical axis V
- a longitudinal plane as being a plane perpendicular to the transverse axis T
- a transverse plane as being a plane perpendicular to the longitudinal axis L.
- the heat treatment module 300 shown in Figure 1 comprises a heat exchanger 310 which is part of the cooling circuit of a heat engine and a motor-fan unit 320 to ensure forced circulation of an air flow F through the heat exchanger 310.
- the heat exchanger 310 comprises, in a conventional manner, a bundle of tubes through which a cooling fluid passes, such as an aqueous solution of ethylene glycol. It is crossed by the air flow F perpendicular to the tube bundle.
- the vehicle's engine is cooled by a heat exchange between the flow of air passing through the beam and the fluid in the cooling circuit.
- the fan motor unit 320 is placed facing the radiator beam.
- the motorized fan unit 320 comprises a propeller 330 driven in rotation by a brushless electric motor 1.
- the brushless electric motor 1 is fixed to a shroud 338 connected to the periphery of the heat exchanger 310.
- the propeller 330 consists of several blades 332 mounted on a bowl 334 and surrounded by a circular fairing 336 itself housed inside the fairing 338.
- the bowl 334 of the propeller 330 is secured to a shaft 5 of the brushless electric motor 1 on which it is fixed by means of a central nut 340.
- the brushless electric motor 1 is connected to the fairing 338 by fixing lugs 59
- the brushless electric motor 1 comprises a stator 3 and a rotor 7 provided with a shaft 5 and rotatably mounted along an axis of rotation R.
- the axis of rotation R is parallel to the vertical axis V as defined above.
- the axis of rotation is for example parallel to a longitudinal axis of the vehicle when the thermal module is mounted on the vehicle.
- the stator 3 extends in a general plane of extension parallel to the previously defined horizontal plane.
- the shaft 5 extends along an axis of extension perpendicular to the general plane of extension of the stator 3. In other words, the shaft 5 extends along the vertical axis V from the main plane of extension of the stator 3 to rotor 7.
- the stator 3 comprises a plurality of coils 21, for example made by winding one or more metal wires 23 around teeth 25 of a body 27 of the stator 3.
- the coils 21 are uniformly arranged in a circle around the shaft 5 seen in projection in the horizontal plane.
- the stator 3 is fixed relative to the case 31.
- the rotor 7 is free to rotate relative to the stator 3.
- the coils 21 make it possible to generate a rotating magnetic field when they are powered by an electric current from a power supply of the vehicle.
- the rotor 7 is mounted fixed on the shaft 5.
- the axis of rotation R of the rotor 7 coincides with the axis of extension of the shaft 5.
- the rotor 7 comprises a bell 31 of cylindrical shape with a circular base whose a longitudinal axis is substantially coincident with the axis of rotation R.
- the bell 31 forms a Faraday cage around the stator 3.
- the bell 31 is open at a first longitudinal end 32 and closed by an upper partition 34 at a second longitudinal end 33.
- the bell 31 is delimited radially by a peripheral partition 35.
- a housing 36 is delimited by the peripheral partition 35 and the upper partition 34.
- the housing 36 accommodates at least a part of the stator 3 that is to say in the example shown in Figure 2, the coils 21.
- the peripheral partition 35 of the rotor 7 surrounds the coils 21 of the stator 3.
- the rotor 7 comprises a plurality of permanent magnets 37.
- the permanent magnets 37 are arranged in the housing 36.
- the permanent magnets 37 are uniformly distributed on an internal face of the peripheral partition 35 seen in projection in the horizontal plane.
- the permanent magnets 37 are magnetic poles which tend to follow the rotating magnetic field generated by the coils 21 of the stator 3 and then allow the rotor 7 to rotate.
- the brushless electric motor 1 also comprises a housing 11 delimiting an interior volume in which are housed a servo circuit 13 and a power circuit 15.
- the box 11 is closed and sealed.
- the power circuit 15 is configured to electrically connect an electrical conduction device 17 to the coils 21 from a vehicle power supply (not shown).
- the electrical connection between the power circuit 15 and the coils 21 is placed under the control of the servo circuit 13.
- the power circuit 15 comprises a tube 100 configured to put the internal volume of the box 11 in air communication with an external environment. of the box 11. Thus the pressure inside the box 11 can be balanced with the pressure of the external environment.
- the tube 100 will be described in more detail below.
- the electrical power supply of the vehicle is routed to the power circuit 13 by the electrical conduction device 17.
- the electrical conduction device 17 comprises an electrical wiring harness comprising at least two power cables 41, 43 configured to convey the electric current from the vehicle power supply to the power circuit, and two servo cables 45, 47 to connect the servo circuit, otherwise known as the control circuit, to the vehicle.
- the two servo cables 45, 47 have the function of transmitting signals from the vehicle to the brushless electric motor 1 and/or from the brushless electric motor 1 to the vehicle.
- the signals transmitted may for example relate to the operation (on/off) of the brushless electric motor 1 and/or an operating instruction of the brushless electric motor 1 and/or a diagnosis of the state of the brushless electric motor 1 .
- electrical cable that one or more flexible electrically conductive element(s) surrounded by at least one electrically insulating layer.
- the box 11 comprises an upper wall 51 and a lower wall 53 interconnected by a vertical wall 55.
- the upper wall 51, the lower wall 53 and the vertical wall 55 delimits the interior volume.
- the upper wall 51 and the lower wall 53 extend parallel to the horizontal plane as previously defined.
- the vertical wall 55 extends circumferentially from an edge of the upper wall 41 towards an edge of the lower wall 53, parallel to the vertical axis V.
- the box 11 is composed of at least one heat-conducting material which allows it to be a heat sink. This makes it possible in particular to dissipate the calories produced by the stator 3, the rotor 7, the power circuit 15 and/or the servo circuit 13, when the brushless electric motor 1 is in operation.
- the heat-conducting material is chosen from among aluminum, copper, a heat-conducting polymer and their mixture.
- the housing 11 comprises fins 57.
- a first part of the fins protrudes from an outer face 52 of the upper wall 51 and a second part of the fins 57 protrudes from a outer face 56 of the vertical wall 55.
- the fins make it possible to improve heat exchange between the box 11 and the air outside the box 11.
- the fins of the first part of the fins 57 are made in one piece with the upper wall 51 of the box 11.
- the fins of the second part of the fins 57 are integral with the vertical wall 55 of the box 11.
- the fins 57 have the shape of a blade seen in projection in a plane comprising the axis of rotation R.
- the material or materials making up the casing 11 are also sufficiently electrically conductive to absorb at least in part the electromagnetic fields emitted by the power circuit 15 and/or the servo circuit 13. The electronic components of the vehicle are thus protected from electromagnetic fields generated by the power circuit 15 and/or the servo circuit 13.
- the box comprises attachment lugs 59 for the motorized fan assembly 320 to the heat treatment module 300.
- Each attachment lug 59 extends from the outer face 56 of the vertical wall 55 of the box 11 in a general plane of extension perpendicular to the axis of rotation R.
- Each attachment lug 59 comprises a through passage 60 which extends along an axis parallel to the axis of rotation R.
- the through passages 60 are configured to cooperate with fixing elements (not shown) of the heat treatment module 300.
- the fixing elements are for example screws.
- the power circuit 15 comprises a plurality of electrically conductive tracks 61, 63, 65.
- Each electrically conductive track 61, 63, 65 has the shape of a bar with a rectangular section seen in projection in a plane perpendicular to a main direction of current conduction.
- Each electrically conductive track 61, 63, 65 has a section greater than or equal to 4 mm 2 seen in projection in a plane orthogonal to the main direction of current conduction.
- a first set of the plurality of electrically conductive tracks has an electrical connection end 62a with the power supply cables 41, 43 of the electrical conduction device 17.
- each electrically conductive track of the first set comprises an electrical connection end 62a with one of the power supply cables 41, 43 of the electrical conduction device 17.
- Each electrical connection end 62a of the electrically conductive tracks of the first set is for example welded to one end of one of the cables 41, 43.
- the servo circuit 13 includes electrical connectors 62b with the servo cables 45, 47 of the electrical conduction device 17. Otherwise the electrical connectors 62b connect the servo cables 45, 47 to the servo circuit. Each electrical connector 62b is for example welded to one end of one of the cables 45, 47.
- the electrical connectors 62b are molded with the power circuit 15.
- a second set of the plurality of electrically conductive tracks has an electrical connection end 66 with electrical connectors (not shown) of the stator 3.
- each electrically conductive track of the second set comprises an electrical connection end 66 with a connector of stator 3.
- Each electrical connection end 66 of the electrically conductive tracks of the second set is for example welded to one of the connectors of stator 3.
- the power circuit 15 includes a plurality of electronic components 71, 73, 75.
- the plurality of electronic components includes at least one coil 71, at least one capacitor 73, and at least one inverter 75.
- the inverter 75 shown in dotted lines, is arranged on a lower face 80 of the power circuit 15.
- the inverter 75 is configured to transform the direct current supplied by the electric power supply of the vehicle into an alternating electric current so as to generate a rotating magnetic field in the stator 3 and therefore to rotate the rotor 7.
- the inverter 75 comprises at least one transistor, preferably an insulated gate field effect transistor also called MOSFET, acronym for Metal Oxide Semiconductor Field Effect Transistor.
- the power circuit 15 comprises a support 81 of the electrically conductive tracks 61, 63, 65.
- the support 81 is a molding on at least a part of the electrically conductive tracks 61, 63, 65.
- the support 81 extends in a general plane of extension perpendicular to the axis of rotation R.
- the support 81 is composed of at least one synthetic material.
- the synthetic material may be a dielectric material so as to avoid short circuits.
- the synthetic material is chosen from the group comprising a PPS, a PPT and their mixture, regardless of the percentage of fiberglass added.
- the servo circuit 13 is fixed on a lower face of the support 81 of the power circuit 15.
- the power circuit 15 is fixed to the box 11 on an inner face 50 of the upper wall 51 of the box 11.
- an upper face 82 of the support 81 of the power circuit 15 is opposite the inner face 50 of the upper wall 51.
- the power circuit 15 is interposed between the servo circuit 13 and the upper wall 51 of the box 11 , along the axis of rotation R.
- Figure 4 and Figure 5 being a sectional view of the housing 11 along the section plane 1000 in Figure 3, the tube 100 has the shape of a right cylinder with a circular base. , seen in projection in a plane perpendicular to the axis of rotation R.
- the tube 100 extends from the internal volume of the box 11 towards an external environment of the box 11, along the vertical axis V.
- the tube 100 passes through the upper wall 51 of the box 11 at the level of a hole 59 passing through the upper wall 51 of the box IL
- an outer end 101 of the tube 100 protrudes from the outer face 52 of the upper wall 51 of the box 11
- an inner end 103 of the tube 100 is in the interior volume of the case 100.
- the outer end 101 of the tube 100 is provided with a first orifice 105.
- the inner end 103 of the tube 100 is provided with a second orifice 107.
- the first orifice 105 opens opposite the stator 3. In other words, in the assembled configuration, the stator 3 rests on the outer face 52 of the upper wall 51 of the casing 11.
- first orifice 105 opens opposite the rotor 7.
- the tube 100 comprises a radial wall 109 which extends between the outline of the first orifice 105 and the outline of the second orifice 107.
- the tube 100 is arranged on the support
- the tube 100 is integral with the support 81 of the power circuit 15. In other words, the tube 100 is not attached to the support 81.
- the tube 100 and the support 81 are for example molded together so as to form a single molded part. Thus the tube 100 and the support 81 can only be separated by destroying the tube 100 and/or the support 81.
- a cavity 91 extends from radial wall 109 of tube 100 to the edge of hole 59 through which tube 100 passes.
- the cavity 91 is delimited by the upper face
- the cavity 91 widens from the upper face 82 of the support 81 to its opening in the outer face 52 of the upper wall 51.
- the cavity 91 comprises a sealing element 93.
- the cavity 91 is filled with sealing element 93.
- the sealing element 93 comprises at least one polymer.
- the polymer is a polysiloxane having a Young's modulus equal to 3GPa.
- the sealing element has sufficient flexibility to adapt to the thermal expansion generated by the operation of the brushless electric motor 1 without the risk of breaking the seal.
- the polymer may be a polyurethane whose Young's modulus is less than or equal to 3GPa.
- the power circuit 13 comprises a breathable membrane 200 arranged to close the tube 100.
- the breathable membrane 200 is impermeable to at least one liquid and permeable and to at least one gas.
- the breathable membrane is impermeable to liquid water and permeable to air.
- the 200 breathable membrane is permeable to water in its gaseous form.
- the breathable membrane 200 is for example a GoreTex® membrane.
- the breathable membrane 200 has the shape of a disc seen in projection in a plane perpendicular to the axis of rotation R.
- the breathable membrane 200 is arranged at the level of the inner end 103 of the tube 100 so as to cover the second orifice 107. More precisely, the breathable membrane 200 is fixed on the lower face 80 of the support 81 so as to cover the second orifice 107.
- the breathable membrane 200 has a diameter greater than a diameter of the contour of the second orifice 107.
- the breathable membrane 200 is fixed to the support 81 of the power circuit 13 by gluing at the contour of the second orifice 107.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Motor Or Generator Frames (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2013035A FR3117700B1 (fr) | 2020-12-11 | 2020-12-11 | Moteur électrique sans balais à membrane régulatrice de pression interne |
| PCT/EP2021/077606 WO2022122215A1 (fr) | 2020-12-11 | 2021-10-06 | Moteur electrique sans balais a membrane regulatrice de pression interne |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4260444A1 true EP4260444A1 (fr) | 2023-10-18 |
Family
ID=74347400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP21787443.7A Pending EP4260444A1 (fr) | 2020-12-11 | 2021-10-06 | Moteur electrique sans balais a membrane regulatrice de pression interne |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US12483094B2 (fr) |
| EP (1) | EP4260444A1 (fr) |
| CN (1) | CN116325450A (fr) |
| FR (1) | FR3117700B1 (fr) |
| WO (1) | WO2022122215A1 (fr) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202014101320U1 (de) * | 2014-03-21 | 2014-04-17 | Robert Bosch Gmbh | Elektrische Maschine zum motorischen Verstellen beweglicher Teile im Motorraum eines Kraftfahrzeugs |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE502005005887D1 (de) * | 2005-05-10 | 2008-12-18 | Siemens Ag | Elektrische Maschine |
| US9425667B2 (en) * | 2013-05-17 | 2016-08-23 | Brose Fahrzeugteile Gmbh & Co. Kg, Wuerzburg | Electric motor |
| EP2908409B1 (fr) * | 2014-02-12 | 2016-09-14 | Pierburg Pump Technology GmbH | Moteur électrique de groupe auxiliaire de véhicule automobile |
| US10320262B2 (en) * | 2016-10-21 | 2019-06-11 | Borgwarner Inc. | Air cooled starter-generator |
-
2020
- 2020-12-11 FR FR2013035A patent/FR3117700B1/fr active Active
-
2021
- 2021-10-06 CN CN202180071322.3A patent/CN116325450A/zh active Pending
- 2021-10-06 EP EP21787443.7A patent/EP4260444A1/fr active Pending
- 2021-10-06 WO PCT/EP2021/077606 patent/WO2022122215A1/fr not_active Ceased
- 2021-10-06 US US18/266,697 patent/US12483094B2/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202014101320U1 (de) * | 2014-03-21 | 2014-04-17 | Robert Bosch Gmbh | Elektrische Maschine zum motorischen Verstellen beweglicher Teile im Motorraum eines Kraftfahrzeugs |
Also Published As
| Publication number | Publication date |
|---|---|
| US20240048026A1 (en) | 2024-02-08 |
| FR3117700A1 (fr) | 2022-06-17 |
| US12483094B2 (en) | 2025-11-25 |
| FR3117700B1 (fr) | 2023-04-28 |
| WO2022122215A1 (fr) | 2022-06-16 |
| CN116325450A (zh) | 2023-06-23 |
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Legal Events
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| STAA | Information on the status of an ep patent application or granted ep patent |
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