CA3082731A1 - Device for inductive energy transfer and stationary part and method for producing a stationary part - Google Patents
Device for inductive energy transfer and stationary part and method for producing a stationary part Download PDFInfo
- Publication number
- CA3082731A1 CA3082731A1 CA3082731A CA3082731A CA3082731A1 CA 3082731 A1 CA3082731 A1 CA 3082731A1 CA 3082731 A CA3082731 A CA 3082731A CA 3082731 A CA3082731 A CA 3082731A CA 3082731 A1 CA3082731 A1 CA 3082731A1
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- Canada
- Prior art keywords
- passage opening
- base part
- stationary part
- base
- stationary
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/30—Constructional details of charging stations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
- B29C39/02—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L5/00—Current collectors for power supply lines of electrically-propelled vehicles
- B60L5/005—Current collectors for power supply lines of electrically-propelled vehicles without mechanical contact between the collector and the power supply line
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
- B60L53/12—Inductive energy transfer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
- B60M1/00—Power supply lines for contact with collector on vehicle
- B60M1/36—Single contact pieces along the line for power supply
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
- B60M7/00—Power lines or rails specially adapted for electrically-propelled vehicles of special types, e.g. suspension tramway, ropeway, underground railway
- B60M7/003—Power lines or rails specially adapted for electrically-propelled vehicles of special types, e.g. suspension tramway, ropeway, underground railway for vehicles using stored power (e.g. charging stations)
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/0033—Moulds or cores; Details thereof or accessories therefor constructed for making articles provided with holes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2200/00—Type of vehicles
- B60L2200/26—Rail vehicles
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/14—Inductive couplings
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Computer Networks & Wireless Communication (AREA)
- Diaphragms And Bellows (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Road Signs Or Road Markings (AREA)
Abstract
The invention relates to a device for inductive energy transfer and to a stationary part of a device of this kind, and to a method for producing a stationary part, wherein: the stationary part (1) comprises a base part (3); the stationary part (1) has a bellows (7), which are fastened to the base part (3); the stationary part has at least one through-opening (10, 11, 18); the at least one through-opening (10, 11, 18) is arranged in a region of the base part (3) surrounded by the bellows (7) or in a region outside the region of the base part (3) surrounded by the bellows (7); a through-opening (10, 11, 18) is arranged in a base surface of the base part (3) or extends through the base surface of the base part (3).
Description
DEVICE FOR INDUCTIVE ENERGY TRANSFER AND STATIONARY PART AND
METHOD FOR PRODUCING A STATIONARY PART
The invention relates to a device for inductive energy transmission and a stationary part of such a device and a method for producing a stationary part.
Electric vehicles, in particular rail-borne vehicles, and/or road vehicles can be operated using electric energy, which is transferred via an inductive energy transfer to the vehicle.
Such vehicles can comprise, for example, a circuit arrangement, which is a traction system or part of a traction system of the vehicle. This circuit arrangement can comprise a receiving device for receiving an electromagnetic alternating field and for generating an alternating current because of electromagnetic induction. Furthermore, a vehicle can comprise a rectifier, which converts an alternating current into a direct current. The direct current can be used to charge a traction battery or operate an electric machine of the vehicle. In the latter case, the direct current can be converted by an inverter back into an alternating current. The inductive power transfer can be carried out by using two sets of windings, in particular three-phase windings. A first set of windings that is installed in or on the base (primary windings) and can be operated by a power converter arranged on the wayside. A second set of windings (secondary windings) is arranged on the vehicle. For example, the second set of windings can be arranged below the vehicle, in the case of a tram below one or more cars. In the case of an automobile, the second set of windings can be fastened on the vehicle chassis. The second set of windings can also be described as a pickup arrangement or receiving device.
A primary unit can comprise the primary windings and a secondary unit can comprise the secondary windings.
The first and the second set of windings form a high-frequency transformer to transfer electric energy to the vehicle. This can take place in a static state (when the vehicle is not moving) or in a dynamic state (when the vehicle is moving).
WO 2015/128450 Al discloses a device for inductive power transfer.
The technical problem results of providing a device for inductive energy transfer, a stationary part of such a device, and a method for producing such a stationary part, Date Recue/Date Received 2020-05-14 wherein an operational reliability of such a device for inductive energy transfer is increased.
The solution to the technical problem results by way of the subjects having the features of claims 1, 10, and 11. Further advantageous designs of the invention result from the dependent claims.
A stationary part of a device for inductive energy transfer is proposed. The device for inductive energy transfer can also be referred to as an inductive charging pad. The device for inductive energy transfer can be or form part of a primary unit of a system for inductive energy transfer. The device can comprise the stationary part and a movable part in this case. The movable part can comprise a primary winding structure.
The primary winding structure can generate an electromagnetic alternating field when an operating (alternating) current is applied to the primary winding structure and/or the primary winding structure is supplied with the operating current.
The movable part can be moved back and forth between a retracted and an extended state. The device can comprise for this purpose at least one means for moving the movable part, in particular at least one actuator. In the meaning of this invention, the term "means for movement" can refer to an entirety of components or elements by which a movement of the movable part can be generated. Therefore, the means for movement can comprise the actuator and/or a lifting mechanism or a lifting means.
Furthermore, the term can also comprise coupling means for mechanical coupling between the actuator and the lifting mechanism or lifting means and/or at least one guide means for movement guiding of the movable part.
The movable part can be moved at least along a first direction, in particular by the means for movement. The first direction can be oriented in parallel to a main propagation direction of the electromagnetic field, which is generated by the primary winding structure. The main propagation direction can be oriented from the primary winding structure to a secondary winding structure if it is arranged above the primary winding structure to receive the generated electromagnetic field.
In particular, the first direction can be oriented orthogonally to a base surface of the
METHOD FOR PRODUCING A STATIONARY PART
The invention relates to a device for inductive energy transmission and a stationary part of such a device and a method for producing a stationary part.
Electric vehicles, in particular rail-borne vehicles, and/or road vehicles can be operated using electric energy, which is transferred via an inductive energy transfer to the vehicle.
Such vehicles can comprise, for example, a circuit arrangement, which is a traction system or part of a traction system of the vehicle. This circuit arrangement can comprise a receiving device for receiving an electromagnetic alternating field and for generating an alternating current because of electromagnetic induction. Furthermore, a vehicle can comprise a rectifier, which converts an alternating current into a direct current. The direct current can be used to charge a traction battery or operate an electric machine of the vehicle. In the latter case, the direct current can be converted by an inverter back into an alternating current. The inductive power transfer can be carried out by using two sets of windings, in particular three-phase windings. A first set of windings that is installed in or on the base (primary windings) and can be operated by a power converter arranged on the wayside. A second set of windings (secondary windings) is arranged on the vehicle. For example, the second set of windings can be arranged below the vehicle, in the case of a tram below one or more cars. In the case of an automobile, the second set of windings can be fastened on the vehicle chassis. The second set of windings can also be described as a pickup arrangement or receiving device.
A primary unit can comprise the primary windings and a secondary unit can comprise the secondary windings.
The first and the second set of windings form a high-frequency transformer to transfer electric energy to the vehicle. This can take place in a static state (when the vehicle is not moving) or in a dynamic state (when the vehicle is moving).
WO 2015/128450 Al discloses a device for inductive power transfer.
The technical problem results of providing a device for inductive energy transfer, a stationary part of such a device, and a method for producing such a stationary part, Date Recue/Date Received 2020-05-14 wherein an operational reliability of such a device for inductive energy transfer is increased.
The solution to the technical problem results by way of the subjects having the features of claims 1, 10, and 11. Further advantageous designs of the invention result from the dependent claims.
A stationary part of a device for inductive energy transfer is proposed. The device for inductive energy transfer can also be referred to as an inductive charging pad. The device for inductive energy transfer can be or form part of a primary unit of a system for inductive energy transfer. The device can comprise the stationary part and a movable part in this case. The movable part can comprise a primary winding structure.
The primary winding structure can generate an electromagnetic alternating field when an operating (alternating) current is applied to the primary winding structure and/or the primary winding structure is supplied with the operating current.
The movable part can be moved back and forth between a retracted and an extended state. The device can comprise for this purpose at least one means for moving the movable part, in particular at least one actuator. In the meaning of this invention, the term "means for movement" can refer to an entirety of components or elements by which a movement of the movable part can be generated. Therefore, the means for movement can comprise the actuator and/or a lifting mechanism or a lifting means.
Furthermore, the term can also comprise coupling means for mechanical coupling between the actuator and the lifting mechanism or lifting means and/or at least one guide means for movement guiding of the movable part.
The movable part can be moved at least along a first direction, in particular by the means for movement. The first direction can be oriented in parallel to a main propagation direction of the electromagnetic field, which is generated by the primary winding structure. The main propagation direction can be oriented from the primary winding structure to a secondary winding structure if it is arranged above the primary winding structure to receive the generated electromagnetic field.
In particular, the first direction can be oriented orthogonally to a base surface of the
2 Date Recue/Date Received 2020-05-14 device for inductive energy transfer and/or to a surface of the base on which the device is installed. The first direction can be oriented away from the base surface in this case.
In the meaning of this invention, the first direction can also be referred to as the vertical direction. Direction-dependent terms such as "upper", "lower", "above", "below", "lowest", "highest", "lower" can relate to this vertical direction hereafter.
In the retracted state, the movable part can be positioned in a retracted position, in particular with respect to the first direction, for example, in a lowest vertical position. The movable part can accordingly be positioned in an extended state at an extended position, in particular at a highest vertical position. In the retracted state, at least a part of an upper side of the movable part can be arranged in the same plane as an upper side of the stationary part or a part thereof.
The device for inductive energy transfer, in particular the stationary part, can comprise or form a fastening section. It can be formed by at least a part of a base part of the stationary part. The fastening section can be used for fastening the stationary part on a holding structure, in particular on a surface of a road or on a wall, for example, a garage wall.
The stationary part thus comprises a base part. In the installed state of the stationary part, the base part is fastened on the holding structure.
Furthermore, the stationary part comprises a folded bellows, which is fastened on the base part. The folded bellows can also be fastened in this case on the movable part of the device. The folded bellows encompasses an inner volume, which is enclosed by the folded bellows, the stationary part, and the movable part. For example, the above-explained means for movement, in particular a lifting means and/or guiding means, can be arranged in this inner volume. The at least one actuator can also be arranged in the inner volume. Upon a movement into the extended state, the folded bellows is unfolded.
Upon a movement from the extended state into the retracted state, the folded bellows is folded. The folded bellows is used to protect the components arranged in the inner volume, in particular from liquids such as water and also from dirt.
In the meaning of this invention, the first direction can also be referred to as the vertical direction. Direction-dependent terms such as "upper", "lower", "above", "below", "lowest", "highest", "lower" can relate to this vertical direction hereafter.
In the retracted state, the movable part can be positioned in a retracted position, in particular with respect to the first direction, for example, in a lowest vertical position. The movable part can accordingly be positioned in an extended state at an extended position, in particular at a highest vertical position. In the retracted state, at least a part of an upper side of the movable part can be arranged in the same plane as an upper side of the stationary part or a part thereof.
The device for inductive energy transfer, in particular the stationary part, can comprise or form a fastening section. It can be formed by at least a part of a base part of the stationary part. The fastening section can be used for fastening the stationary part on a holding structure, in particular on a surface of a road or on a wall, for example, a garage wall.
The stationary part thus comprises a base part. In the installed state of the stationary part, the base part is fastened on the holding structure.
Furthermore, the stationary part comprises a folded bellows, which is fastened on the base part. The folded bellows can also be fastened in this case on the movable part of the device. The folded bellows encompasses an inner volume, which is enclosed by the folded bellows, the stationary part, and the movable part. For example, the above-explained means for movement, in particular a lifting means and/or guiding means, can be arranged in this inner volume. The at least one actuator can also be arranged in the inner volume. Upon a movement into the extended state, the folded bellows is unfolded.
Upon a movement from the extended state into the retracted state, the folded bellows is folded. The folded bellows is used to protect the components arranged in the inner volume, in particular from liquids such as water and also from dirt.
3 Date Recue/Date Received 2020-05-14 Furthermore, the stationary part comprises at least one passage opening.
According to the invention, at least one passage opening is arranged in a region of the base part encompassed by the folded bellows or in a region outside the region of the base part encompassed by the folded bellows. The region outside the region encompassed by the folded bellows can also be referred to as an outer region.
Furthermore, a passage opening or at least a part of the passage opening is arranged in a base surface of the base part and/or extends through the base surface. In other words, the base surface can comprise the passage opening or at least a part thereof. In this case, in particular a central axis of symmetry of the passage opening can be oriented in parallel to the above-explained vertical direction. In particular, the base part can comprise a base surface or multiple base surface sections. The base surface can be oriented orthogonally to the vertical direction in one base surface section. Liquid can thus drain through the passage opening from an upper side to a lower side of the base part.
A movement of the liquid can take place in this case at least partially because of an acting weight force. Therefore, it advantageously results due to such an orientation of the passage opening that liquid exits or drains simply and reliably from the inner or outer region of the base part.
The passage opening or the duct formed by the passage opening can in particular comprise a first end section, which is arranged on an upper side of the base part and/or is open toward the upper side. Fluid can enter the passage opening from the upper side through this first end section. The upper side can refer to the side of the base part on which the folded bellows is fastened. Furthermore, the passage opening or the duct formed by the passage opening can comprise a further end section, which is arranged on a lower side of the base part and/or is open toward the lower side. Fluid can exit from the passage opening toward the lower side through this further end section.
The lower side can refer in this case to the side of the base part opposite to the upper side.
The following statements can refer to the following reference coordinate system. The coordinate system can be defined by a longitudinal direction (x direction), a transverse direction (y direction), and the above-explained vertical direction. The longitudinal and transverse directions can span a plane which is oriented in parallel or essentially in
According to the invention, at least one passage opening is arranged in a region of the base part encompassed by the folded bellows or in a region outside the region of the base part encompassed by the folded bellows. The region outside the region encompassed by the folded bellows can also be referred to as an outer region.
Furthermore, a passage opening or at least a part of the passage opening is arranged in a base surface of the base part and/or extends through the base surface. In other words, the base surface can comprise the passage opening or at least a part thereof. In this case, in particular a central axis of symmetry of the passage opening can be oriented in parallel to the above-explained vertical direction. In particular, the base part can comprise a base surface or multiple base surface sections. The base surface can be oriented orthogonally to the vertical direction in one base surface section. Liquid can thus drain through the passage opening from an upper side to a lower side of the base part.
A movement of the liquid can take place in this case at least partially because of an acting weight force. Therefore, it advantageously results due to such an orientation of the passage opening that liquid exits or drains simply and reliably from the inner or outer region of the base part.
The passage opening or the duct formed by the passage opening can in particular comprise a first end section, which is arranged on an upper side of the base part and/or is open toward the upper side. Fluid can enter the passage opening from the upper side through this first end section. The upper side can refer to the side of the base part on which the folded bellows is fastened. Furthermore, the passage opening or the duct formed by the passage opening can comprise a further end section, which is arranged on a lower side of the base part and/or is open toward the lower side. Fluid can exit from the passage opening toward the lower side through this further end section.
The lower side can refer in this case to the side of the base part opposite to the upper side.
The following statements can refer to the following reference coordinate system. The coordinate system can be defined by a longitudinal direction (x direction), a transverse direction (y direction), and the above-explained vertical direction. The longitudinal and transverse directions can span a plane which is oriented in parallel or essentially in
4 Date Recue/Date Received 2020-05-14 parallel to a fastening surface of the holding structure, in particular the base surface, on which the device, in particular the stationary part, is installed. The plane can also be perpendicular to the above-explained first direction (vertical direction). The longitudinal, transverse, and vertical directions can each be oriented orthogonally in relation to one another.
If the stationary part is arranged on a surface of a road, the vertical direction can thus be oriented in particular in parallel to a gravitation direction.
It is furthermore possible that the primary winding structure extends along a direction which is oriented in parallel to the longitudinal direction. For example, the primary winding structure, in particular a phase line of the primary winding structure, can comprise multiple sub-windings, which are arranged in succession along the extension direction. It is also possible that the primary winding structure comprises three phase lines, wherein each phase line comprises multiple sub-windings, which each extend along the extension direction.
Edges of the stationary part oriented in parallel to the longitudinal direction or essentially in parallel thereto can also be referred to as a longitudinal edge. Edges oriented in parallel to the transverse direction or essentially in parallel thereto can also be referred to as the transverse edge or end face.
It is possible that the stationary part comprises a housing section and a receptacle section for accommodating the movable part at least in the retracted state.
For example, electrical or electronic components, for example, components of an inverter, can be arranged in the stationary part.
The folded bellows and further elements, in particular the movable part in the retracted state, can be arranged in the receptacle section. In the housing section, the stationary part can comprise or form a housing, which protects the components arranged therein, in particular from dirt and water. Of course, the stationary part can comprise connecting devices for connecting external supply means, for example, means for energy supply or coolant supply.
Date Recue/Date Received 2020-05-14 A sub-winding can refer in this case to a preferably complete conductor loop, which encloses a predetermined area. The conductor loop can comprise or form one or more windings. Adjacent to one another can mean that central axes of symmetry of the sub-windings arranged adjacent to one another along the extension direction are spaced apart with a predetermined spacing from one another along a straight line, which is oriented in parallel to the extension direction.
Sub-windings can in this case comprise arbitrary geometric shapes, but preferably a rectangular shape or a circular shape.
Due to the passage openings in the region encompassed by the folded bellows, which can also be referred to as an inner region, it advantageously results that a liquid or fluid, in particular water, which collects in the inner region can drain off, in particular through the passage opening. An operational reliability of a device for inductive energy transfer having such a stationary part is increased in this way, since, for example, component elements arranged in the inner region rust less or a functionality of an electrical component arranged there, for example, the actuator, is not negatively affected by water.
The passage openings arranged in the outer region advantageously enable liquid dripping or draining from the folded bellows, for example, spray water, to drain off reliably and rapidly from or out of the stationary part. In particular, the water on the folded bellows can flow down into or onto a support section of the stationary part for the folded bellows, wherein the liquid can then drain off from the stationary part through the passage openings in the outer region.
In this way, the risk is reduced that liquid, in particular water, can penetrate from the outer region into the inner region and can endanger a functionality of components there.
In a further embodiment, the base part comprises or forms a wall section protruding from a base surface of the base part. For example, various base surface sections can be delimited from one another by such a wall section. For example, the above-explained outer region can comprise a cooling duct section, which is separated by a wall section from the above-explained support section for the folded bellows. Furthermore, the Date Recue/Date Received 2020-05-14 support section for the folded bellows can be separated by a further wall section from one further or multiple further base surface sections in the inner region.
It is possible that the wall section comprises an inner volume open to the bottom in the vertical direction. In other words, the wall section thus comprises an inner volume which is open on one side, in particular to the bottom. In this case, the passage opening can be arranged in the wall section, in particular in a side wall section of the wall section. A
normal vector of the side wall section can comprise a directional component which is oriented in parallel to the above-explained longitudinal and/or transverse direction.
It is possible that the wall section comprises a part of the passage opening, wherein the remaining part of the passage opening is arranged in the base part or the base part forms the remaining part of the passage opening.
It is possible, for example, that the above-explained first end section of the passage opening is arranged in the wall section, in particular in the side wall section. In this case, the first end section can be arranged in particular on a lower end section of the wall section or side wall section. This lower end section can refer to a section which abuts an upper side surface of the base part or adjoins it.
In particular, a central axis of symmetry of the passage opening can thus not be oriented in parallel to the above-explained vertical direction. Rather, the central axis of symmetry can comprise at least one directional component which is oriented in parallel to the above-explained longitudinal and/or transverse direction. It is possible in this case that the central axis of symmetry does not have a directional component which is oriented in parallel to the vertical direction. However, this is not required. It is also conceivable that the central axis of symmetry comprises a directional component which is oriented in parallel to the vertical direction.
It is furthermore conceivable that an orientation of the central axis of symmetry of the passage opening or the duct formed by the passage opening changes along a course.
For example, an orientation of the central axis of symmetry in the first end section of the passage opening can be different from the orientation in the further end section of the passage opening. Thus, for example, a directional vector of the central axis of symmetry in the first end section can comprise a directional component which is oriented in Date Recue/Date Received 2020-05-14 parallel to the above-explained longitudinal and/or transverse direction and/or cannot comprise a directional component which is oriented in parallel to the vertical direction.
Furthermore, for example, a directional vector of the central axis of symmetry in the further end section can comprise a directional component which is oriented in parallel to the vertical direction and/or cannot comprise a directional component which is oriented in parallel to the above-explained longitudinal and/or transverse direction.
The passage opening can connect the inner volume of the wall section to an upper side of the base part. In this case, it is thus possible that liquid enters through the passage opening in the wall section from an upper side of the base part into the inner volume of the wall section and exits downward out of the inner volume through the opening of the wall section.
A reliable drainage of liquid advantageously results in this way, since passage openings arranged in the wall section cannot be closed easily by dirt, for example, by leaves, rocks, or further particles, whereby the liquid drainage would be reduced or prevented.
In a further embodiment, the stationary part comprises a support section for a stationary-part-side end section of the folded bellows or forms it. In this support section, the folded bellows can be fastened on the stationary part and/or rest on the stationary part, at least in the folded state. Furthermore, the folded bellows can also comprise a further end section for fastening on the movable part.
Furthermore, the at least one passage opening is arranged outside the region of the base part encompassed by the folded bellows and in an edge section of the support section or in a section of the base part adjacent to the support section. In particular, the passage opening can be arranged in such a way that liquid draining or dripping off of the folded bellows can drain off as directly as possible through the passage opening from the upper side of the base part.
In particular, it is possible that in a common projection plane, the passage opening is arranged directly adjacent to the folded bellows, in particular in the folded state, wherein the common projection surface can be oriented, for example, orthogonally to the vertical direction. It is also possible that in this common projection plane, a minimal spacing of an edge of the passage opening from the folded bellows along the longitudinal direction Date Recue/Date Received 2020-05-14 and/or along the transverse direction is not greater than a predetermined amount for example, not greater than 5 mm.
In other words, it is possible that the passage openings are arranged as much as possible directly adjacent to the folded bellows in the outer region to discharge water draining off from the folded bellows as directly as possible from the stationary part.
In a further embodiment, the base part comprises at least one means for fluid guiding of a fluid, preferably water, toward the at least one passage opening or forms this means.
Via the means for fluid guiding, fluid can be conducted out of the inner and/or outer region toward the passage opening, in particular out of regions or base surface sections of the base part which are adjacent to the passage opening. The means for fluid guiding can preferably be formed in such a way that the weight force acting on the fluid at least partially causes a fluid flow toward the passage opening.
Reliable drainage of fluid on the stationary part and thus also increased operational reliability advantageously result in this way.
In a further embodiment, the means for fluid guiding is formed as a duct or as a groove.
A simple formation of the means for fluid guiding advantageously results in this way, in particular in the case of a production of the stationary part by a casting method.
In a further embodiment, at least a part of a section of the base part enclosing the passage opening is beveled toward the passage opening. The bevel can be formed in this case in particular in such a way that fluid can flow along the beveled surface toward the passage opening because of the weight force. The simplest possible formation of a means for fluid guiding and/or for promoting or ensuring fluid drainage from the stationary part advantageously results in this way, and thus in turn increased operational reliability.
In a further embodiment, the base part comprises at least two passage openings, wherein the passage openings have different geometric shapes from one another.
The fact that passage openings have different geometric shapes from one another can mean in particular that a geometric basic shape of a first passage opening is different Date Recue/Date Received 2020-05-14 from a geometric basic shape of a further passage opening. For example, the first passage opening can comprise a circular shape as the basic shape, while the second passage opening can comprise an oblong hole shape. A basic shape can be in particular a circular shape, an oblong hole shape, a rectangle shape, a triangle shape, an oval shape, a polygon shape, or another shape.
However, the fact that passage openings have different geometric shapes from one another can also mean that the passage openings do have an identical geometric basic shape, for example, an oblong hole shape or a rectangle shape, but different orientations from one another, in particular in the reference coordinate system. In particular, central longitudinal axes of the passage openings can have different orientations from one another.
For example, a geometric shape and/or orientation of a passage opening which is arranged in or on a first longitudinal edge of the base part or the receptacle section of the base part can be different from a geometric shape of a passage opening which is arranged on an opposing longitudinal edge or on a transverse edge.
A production of the stationary part, in particular by a casting method, can be simplified by the geometric shapes different from one another. In particular, the geometric shape of the individual passage openings can be selected in such a way that the production of the stationary part as a casting is performed having a reliable material distribution of the casting material into a casting mold of the casting. The casting mold comprises sections or elements in this case which define the location and shape of the passage openings, wherein the casting material flows around the sections or elements.
In a further embodiment, geometric shapes of passage openings arranged along a predetermined direction are selected in such a way that a pressure resistance associated with the passage openings increases along the predetermined direction.
The pressure resistance associated with a passage opening is in this case a pressure resistance of a body around which flow occurs against a fluid flowing along the predetermined direction, in particular of the casting material flowing along the predetermined direction, wherein an outer surface of the body around which flow occurs has a geometric shape corresponding to the passage opening. If the geometric shape of Date Recue/Date Received 2020-05-14 the passage opening is designed, for example, as a circle having a predetermined diameter, the body around which flow occurs can thus be a cylinder having circular cross section and the same diameter.
The predetermined direction can be in particular a casting direction. The predetermined direction can be, for example, oriented in parallel to the longitudinal direction or in parallel to the transverse direction. In this case, material is poured into a casting mold, which then flows along the casting direction and fills the casting mold.
The fact that the passage openings are arranged along the predetermined direction does not necessarily mean that they are arranged along a straight line which is oriented in parallel to the predetermined direction.
A simple and reliable production of the stationary part advantageously results in this way, in particular by a casting method. In particular, it is ensured that a material distribution during the casting is not prevented or obstructed by the sections or elements of the casting mold which define the location and geometric shape of the passage openings in the stationary part.
In a further embodiment, a passage opening which is arranged in or adjacent to a first subsection of the support section of the base part has a geometric shape which is different from a geometric shape of a passage opening which is arranged in or adjacent to a further subsection of the support section. In this way, the passage opening can be arranged in particular in an edge section of the subsection in each case.
Alternatively or additionally, a passage opening which is arranged in a first edge section of the stationary part has a geometric shape which is different from a geometric shape of a passage opening which is arranged in a further edge section of the stationary part.
The first subsection of the support section can be arranged in this case along the predetermined direction, in particular a casting direction, in front of the further subsection of the support section. Accordingly, the first subsection can be arranged along the predetermined direction in front of the further edge section of the stationary part. For example, the first subsection can be arranged adjacent to a first longitudinal edge or a first transverse edge of the stationary part and/or of the receptacle section of Date Recue/Date Received 2020-05-14 the stationary part, wherein the further subsection can be arranged adjacent to an opposing longitudinal edge or an opposing transverse edge of the stationary part and/or the receptacle section of the stationary part.
The first edge section can also correspond to a first longitudinal edge or first transverse edge, wherein the further edge section corresponds to an opposing longitudinal edge or opposing transverse edge.
For example, passage openings, which are arranged in or adjacent to a first subsection of the support section of the base part or in the first edge section, can have a circular shape.
Passage openings, which are arranged in or adjacent to a further subsection or in the further edge section, can have an oblong hole shape. An oblong hole can refer in this case to an oblong passage opening, the narrow sides of which are terminated by semicircles.
In this case, a longitudinal axis of the oblong hole can be oriented in parallel to the predetermined direction, but preferably orthogonally to the predetermined direction.
It is possible that passage openings are arranged both on the longitudinal edges and also on the transverse edges of the stationary part and/or the support section and/or in sections which extend parallel to these edges. In this case, the passage openings arranged in/on the transverse edges can also have geometric shapes which are different from the geometric shapes of passage openings which are arranged in/on a first longitudinal edge. The passage openings arranged in/on the transverse edges can also have geometric shapes which are different from the geometric shapes of the passage openings which are arranged in/on an opposing longitudinal edge.
An improved adaptation to production conditions, in particular to a casting method, thus advantageously results.
Furthermore, a device for inductive energy transfer is proposed having a stationary part according to one of the embodiments disclosed in this disclosure. The device for inductive energy transfer comprises in this case a movable part, wherein the folded Date Recue/Date Received 2020-05-14 bellows is fastened on the movable part. A lever mechanism, which also connects the stationary part to the movable part, can be arranged in the inner volume encompassed by the folded bellows. Furthermore, electrical connecting means, for example, cables, can be arranged in the inner volume, by which elements of the movable part are connected to elements of the stationary part.
Furthermore, a method is proposed for producing a stationary part according to an embodiment disclosed in this disclosure. The method comprises in this case all production steps for producing such a stationary part. In particular, a base part can be provided. The base part can be provided in particular by a casting method. In this case, the casting material can be poured into a casting mold, wherein the base part has a desired shape after curing of the casting material. The casting mold can be formed in this case in such a way that the stationary part (after the curing) comprises at least one passage opening, wherein the at least one passage opening is arranged in a region of the base part encompassed by the folded bellows and/or in a region outside the region of the base part encompassed by the folded bellows.
Furthermore, a folded bellows is provided and fastened on the base part. The folded bellows can in particular be fastened with a stationary-part-side end section on the stationary part, in particular on a receptacle section of the stationary part.
Furthermore, at least one passage opening of the stationary part is provided.
This can take place in the scope of the above-explained casting method. Of course, however, it is also possible that the passage opening is introduced into the base part after provision of the base part, for example, by drilling, stamping, or by a further method for introducing a passage opening.
Furthermore, a wall section, a support section for the stationary-part-side end section of the folded bellows, a means for fluid guiding, in particular a duct or a groove, and/or a bevel toward the passage opening can be provided subsequently or in the scope of the explained casting method.
Furthermore, at least two passage openings can be provided which have geometric shapes different from one another. This can also be ensured by the above-explained casting method.
Date Recue/Date Received 2020-05-14 In particular, casting material can be poured along a predetermined casting direction into a casting mold, wherein the casting mold comprises sections or elements along the casting direction for defining the location and geometric shape of the passage openings, wherein a pressure resistance of these sections or elements increases along the predetermined direction.
Furthermore, a method is also described for producing a device for inductive energy transfer having a stationary part and a movable part. In this case, the stationary part can be provided according to one of the methods for production described in this disclosure.
Furthermore, a movable part can be provided and can be connected to the stationary part. Furthermore, the folded bellows can be fastened on the movable part.
The invention will be explained in greater detail on the basis of exemplary embodiments.
In the figures:
Figure 1 shows a schematic top view of a stationary part according to an embodiment according to the invention and Figure 2 shows a schematic side view of a device according to the invention for inductive energy transfer.
Figure 1 shows a schematic top view of a stationary part 1 of a device 2 for inductive energy transfer. The stationary part 1 comprises a base part 3. Furthermore, the stationary part 1 comprises a housing section 4 and a receptacle section 5 for accommodating a movable part 6 (see Figure 2). Furthermore, the stationary part 1 comprises a folded bellows 7 (see Figure 2), which is fastened on the base part 3. The folded bellows 7 is identified in the top view by a shaded region.
Furthermore, a longitudinal direction x and a transverse direction y of a reference coordinate system are shown. The longitudinal direction x and the transverse direction y are oriented perpendicularly to one another in this case.
Furthermore, a region 8 encompassed by the folded bellows 7, which can also be referred to as an inner region, and a region 9 outside the region encompassed by the folded bellows 7, which can also be referred to as an outer region, are shown.
The Date Recue/Date Received 2020-05-14 regions 8, 9 can be subregions of the receptacle section 5 of the stationary part 1 in this case.
It is furthermore shown that the stationary part 1, in particular the receptacle section 5, comprises passage openings 10 in the base part 3, wherein the passage openings are arranged in the inner region 8. Furthermore, further passage openings 11 in the base part 3 of the stationary part 1 are shown, in particular of the receptacle section 5, wherein these passage openings 11 are arranged in the outer region 9.
Furthermore, a wall section 12 is shown, wherein the wall section 12 is arranged in the outer region 9. A receptacle section 13 of the base part 3 for the folded bellows 7 is separated from a cooling duct section 14 by the wall section 12, wherein the cooling duct section 14 is arranged in the outer region 9. The wall section 12 can be arranged on a foundation plate of the base part or can be formed thereby.
It is shown that the passage openings 11 are arranged in the outer region 9 in the support section 13 and/or in a region of the base part 3 which is adjacent to the support section 13.
Furthermore, a means 15 for fluid guiding formed as a groove is schematically shown.
By means of the groove 15, fluid, in particular water, can be transported from adjacent regions of the passage openings 11 toward the respective passage opening 11.
Furthermore, it is shown that passage openings 11 a of a first set of passage openings 11 are formed to be circular. Passage openings 11b, 11c of a second and a third set of passage openings 11 are formed as oblong holes. The passage openings 11a, 11 b, 11c of the first, second, and third set of passage openings 11 are arranged in the outer region. Passage openings 10 of a fourth set of passage openings are formed to be circular and are arranged in the inner region 8.
Furthermore, it is shown that orientations of the longitudinal axes of the passage openings 11 b, 11c formed as oblong holes are different from one another. In particular, a central longitudinal axis of passage openings llb of the second set of passage openings llb is oriented in parallel to the transverse direction y, while a central Date Recue/Date Received 2020-05-14 longitudinal axis of passage openings 11c of the third set of passage openings 11c is oriented in parallel to the longitudinal direction x.
The passage openings 10, 11, 11a, 11 b, 11c and/or ducts formed by these passage openings extend through the base part 3 and/or a foundation plate of the base part 3, in particular from an upper side to a lower side.
The stationary part 1 can be produced as a cast part. In this case, a casting mold can be provided in such a way that casting material flows into the casting mold from a first longitudinal edge 16a toward a second longitudinal edge 16b of the stationary part Ito be produced. In this case, the casting material firstly flows against the sections of the casting mold which form the location and formation of the passage openings 11 a of the first set of passage openings 11, wherein these passage openings lla are arranged in the region of the first longitudinal edge 16a. Furthermore, the casting material flows against sections of the casting mold which define the location and formation of the passage openings llb of the second set of passage openings 11, wherein these are arranged in the region of the transverse edges. Thirdly and lastly, the casting material flows against the passage openings 11c of the third set of passage openings 11, which are arranged in the second longitudinal edge 16b, wherein the second longitudinal edge 16b is arranged in a flow direction behind the first longitudinal edge 16a.
The casting material thus flows along a flow direction which is oriented in parallel to the transverse direction y.
A pressure resistance of the sections which define the location and formation of the passage openings lla of the first set, the passage openings llb of the second set, and the passage openings 10 of the fourth set is less in this case than a pressure resistance of the sections which define the location and formation of the passage openings 11c of the third set of passage openings 11.
Furthermore, the pressure resistances of the sections which define the location and formation of the passage openings lla of the first set and the passage openings llb of the second set and also the passage openings 10 of the fourth set can also differ from one another.
Date Recue/Date Received 2020-05-14 Furthermore, a beveled region 17 is shown, which is arranged around a passage opening 10 in the inner region. In this case, the beveled region 17 is formed in such a way that it is beveled toward the passage opening 10. Fluid, in particular water, can flow toward the passage opening 10 thanks to the beveled surface.
Figure 2 shows a schematic side view of a device 2 according to the invention for inductive energy transfer. In this case, the stationary part 1 having the housing section 4 and the receptacle section 5 is shown. Furthermore, the base part 3, which is part of the stationary part 1, is shown. Furthermore, a movable part 6 is shown. The movable part 6 can be moved by means of means (not shown) for movement in an opposite to a vertical direction z, wherein the vertical direction z is oriented perpendicular to the longitudinal direction x and to the transverse direction y (see Figure 1).
The movable part 6 is shown in the extended state. In the retracted state, the movable part 6 rests on a surface of the base part 3, in particular in the receptacle section 5.
The passage openings 11, 11a, which are arranged in the region of the first longitudinal edge 16a in the outer region 9, are shown. Further passage openings 10, 11 b, 11c, which are shown in Figure 1, for example, are not shown in this case.
Furthermore, the wall section 12, which extends around the support section 13 for the folded bellows 7, is shown. It is shown that passage openings 18, by which an inner volume 19 enclosed by the wall section 12 is connected to the support section 13, are arranged in a side wall section of the wall section 12. Passage openings 18 extend through the side wall section and through the base part 3 or the foundation plate of the base part 3, in particular from an upper side to a lower side. It is furthermore shown that the inner volume 19 of the wall section 12 is open toward a lower side of the base part 1. In this way, water can drain off from the support section 13 through the side walls of the wall section 12 to the lower side. It is furthermore shown that the lower side is fastened on a holding structure 19, for example, a base or a wall. In other words, Figure 2 shows that a part of the duct formed by the passage opening 18 can be arranged in a side wall section, wherein a further, in particular remaining part is arranged in the base part 3 or in the foundation plate of the base part 3.
Figure 3 shows a schematic flow chart of a method for producing a stationary part 1. In a first step Sl, a base part is provided. The base part can be provided by a casting Date Recue/Date Received 2020-05-14 method, as explained above. Furthermore, at least one passage opening 10, 11 of the stationary part 1 is provided. This can be performed in the scope of the explained casting method.
In a second step S2, a folded bellows 7 is provided and fastened on the base part 3.
The folded bellows 7 can in particular be fastened with a stationary-part-side end section on the stationary part 1, in particular on a receptacle section of the stationary part.
Furthermore, at least two passage openings 10, 11a, 11b, 11c can be provided, which have geometric shapes different from one another. These can also be ensured by the above-explained casting method. In particular, casting material can be poured along a predetermined casting direction into a casting mold, wherein the casting mold comprises sections or elements along the casting direction for defining the location and geometric shape of the passage openings, wherein a pressure resistance of these sections or elements increases along the predetermined direction.
Date Recue/Date Received 2020-05-14 List of reference numerals 1 stationary part 2 device for inductive energy transfer 3 base part 4 inner region outer region 6 movable part 7 folded bellows 8 inner region 9 outer region passage opening in the inner region 11 passage opening in the outer region 11 a passage opening of a first set of passage openings 11 b passage opening of a second set of passage openings 11c passage opening of a third set of passage openings 12 wall section 13 support section 14 cooling duct section groove 16a first longitudinal edge 16 longitudinal edge opposite to the first longitudinal edge 17 beveled region 18 passage opening 19 holding structure Date Recue/Date Received 2020-05-14
If the stationary part is arranged on a surface of a road, the vertical direction can thus be oriented in particular in parallel to a gravitation direction.
It is furthermore possible that the primary winding structure extends along a direction which is oriented in parallel to the longitudinal direction. For example, the primary winding structure, in particular a phase line of the primary winding structure, can comprise multiple sub-windings, which are arranged in succession along the extension direction. It is also possible that the primary winding structure comprises three phase lines, wherein each phase line comprises multiple sub-windings, which each extend along the extension direction.
Edges of the stationary part oriented in parallel to the longitudinal direction or essentially in parallel thereto can also be referred to as a longitudinal edge. Edges oriented in parallel to the transverse direction or essentially in parallel thereto can also be referred to as the transverse edge or end face.
It is possible that the stationary part comprises a housing section and a receptacle section for accommodating the movable part at least in the retracted state.
For example, electrical or electronic components, for example, components of an inverter, can be arranged in the stationary part.
The folded bellows and further elements, in particular the movable part in the retracted state, can be arranged in the receptacle section. In the housing section, the stationary part can comprise or form a housing, which protects the components arranged therein, in particular from dirt and water. Of course, the stationary part can comprise connecting devices for connecting external supply means, for example, means for energy supply or coolant supply.
Date Recue/Date Received 2020-05-14 A sub-winding can refer in this case to a preferably complete conductor loop, which encloses a predetermined area. The conductor loop can comprise or form one or more windings. Adjacent to one another can mean that central axes of symmetry of the sub-windings arranged adjacent to one another along the extension direction are spaced apart with a predetermined spacing from one another along a straight line, which is oriented in parallel to the extension direction.
Sub-windings can in this case comprise arbitrary geometric shapes, but preferably a rectangular shape or a circular shape.
Due to the passage openings in the region encompassed by the folded bellows, which can also be referred to as an inner region, it advantageously results that a liquid or fluid, in particular water, which collects in the inner region can drain off, in particular through the passage opening. An operational reliability of a device for inductive energy transfer having such a stationary part is increased in this way, since, for example, component elements arranged in the inner region rust less or a functionality of an electrical component arranged there, for example, the actuator, is not negatively affected by water.
The passage openings arranged in the outer region advantageously enable liquid dripping or draining from the folded bellows, for example, spray water, to drain off reliably and rapidly from or out of the stationary part. In particular, the water on the folded bellows can flow down into or onto a support section of the stationary part for the folded bellows, wherein the liquid can then drain off from the stationary part through the passage openings in the outer region.
In this way, the risk is reduced that liquid, in particular water, can penetrate from the outer region into the inner region and can endanger a functionality of components there.
In a further embodiment, the base part comprises or forms a wall section protruding from a base surface of the base part. For example, various base surface sections can be delimited from one another by such a wall section. For example, the above-explained outer region can comprise a cooling duct section, which is separated by a wall section from the above-explained support section for the folded bellows. Furthermore, the Date Recue/Date Received 2020-05-14 support section for the folded bellows can be separated by a further wall section from one further or multiple further base surface sections in the inner region.
It is possible that the wall section comprises an inner volume open to the bottom in the vertical direction. In other words, the wall section thus comprises an inner volume which is open on one side, in particular to the bottom. In this case, the passage opening can be arranged in the wall section, in particular in a side wall section of the wall section. A
normal vector of the side wall section can comprise a directional component which is oriented in parallel to the above-explained longitudinal and/or transverse direction.
It is possible that the wall section comprises a part of the passage opening, wherein the remaining part of the passage opening is arranged in the base part or the base part forms the remaining part of the passage opening.
It is possible, for example, that the above-explained first end section of the passage opening is arranged in the wall section, in particular in the side wall section. In this case, the first end section can be arranged in particular on a lower end section of the wall section or side wall section. This lower end section can refer to a section which abuts an upper side surface of the base part or adjoins it.
In particular, a central axis of symmetry of the passage opening can thus not be oriented in parallel to the above-explained vertical direction. Rather, the central axis of symmetry can comprise at least one directional component which is oriented in parallel to the above-explained longitudinal and/or transverse direction. It is possible in this case that the central axis of symmetry does not have a directional component which is oriented in parallel to the vertical direction. However, this is not required. It is also conceivable that the central axis of symmetry comprises a directional component which is oriented in parallel to the vertical direction.
It is furthermore conceivable that an orientation of the central axis of symmetry of the passage opening or the duct formed by the passage opening changes along a course.
For example, an orientation of the central axis of symmetry in the first end section of the passage opening can be different from the orientation in the further end section of the passage opening. Thus, for example, a directional vector of the central axis of symmetry in the first end section can comprise a directional component which is oriented in Date Recue/Date Received 2020-05-14 parallel to the above-explained longitudinal and/or transverse direction and/or cannot comprise a directional component which is oriented in parallel to the vertical direction.
Furthermore, for example, a directional vector of the central axis of symmetry in the further end section can comprise a directional component which is oriented in parallel to the vertical direction and/or cannot comprise a directional component which is oriented in parallel to the above-explained longitudinal and/or transverse direction.
The passage opening can connect the inner volume of the wall section to an upper side of the base part. In this case, it is thus possible that liquid enters through the passage opening in the wall section from an upper side of the base part into the inner volume of the wall section and exits downward out of the inner volume through the opening of the wall section.
A reliable drainage of liquid advantageously results in this way, since passage openings arranged in the wall section cannot be closed easily by dirt, for example, by leaves, rocks, or further particles, whereby the liquid drainage would be reduced or prevented.
In a further embodiment, the stationary part comprises a support section for a stationary-part-side end section of the folded bellows or forms it. In this support section, the folded bellows can be fastened on the stationary part and/or rest on the stationary part, at least in the folded state. Furthermore, the folded bellows can also comprise a further end section for fastening on the movable part.
Furthermore, the at least one passage opening is arranged outside the region of the base part encompassed by the folded bellows and in an edge section of the support section or in a section of the base part adjacent to the support section. In particular, the passage opening can be arranged in such a way that liquid draining or dripping off of the folded bellows can drain off as directly as possible through the passage opening from the upper side of the base part.
In particular, it is possible that in a common projection plane, the passage opening is arranged directly adjacent to the folded bellows, in particular in the folded state, wherein the common projection surface can be oriented, for example, orthogonally to the vertical direction. It is also possible that in this common projection plane, a minimal spacing of an edge of the passage opening from the folded bellows along the longitudinal direction Date Recue/Date Received 2020-05-14 and/or along the transverse direction is not greater than a predetermined amount for example, not greater than 5 mm.
In other words, it is possible that the passage openings are arranged as much as possible directly adjacent to the folded bellows in the outer region to discharge water draining off from the folded bellows as directly as possible from the stationary part.
In a further embodiment, the base part comprises at least one means for fluid guiding of a fluid, preferably water, toward the at least one passage opening or forms this means.
Via the means for fluid guiding, fluid can be conducted out of the inner and/or outer region toward the passage opening, in particular out of regions or base surface sections of the base part which are adjacent to the passage opening. The means for fluid guiding can preferably be formed in such a way that the weight force acting on the fluid at least partially causes a fluid flow toward the passage opening.
Reliable drainage of fluid on the stationary part and thus also increased operational reliability advantageously result in this way.
In a further embodiment, the means for fluid guiding is formed as a duct or as a groove.
A simple formation of the means for fluid guiding advantageously results in this way, in particular in the case of a production of the stationary part by a casting method.
In a further embodiment, at least a part of a section of the base part enclosing the passage opening is beveled toward the passage opening. The bevel can be formed in this case in particular in such a way that fluid can flow along the beveled surface toward the passage opening because of the weight force. The simplest possible formation of a means for fluid guiding and/or for promoting or ensuring fluid drainage from the stationary part advantageously results in this way, and thus in turn increased operational reliability.
In a further embodiment, the base part comprises at least two passage openings, wherein the passage openings have different geometric shapes from one another.
The fact that passage openings have different geometric shapes from one another can mean in particular that a geometric basic shape of a first passage opening is different Date Recue/Date Received 2020-05-14 from a geometric basic shape of a further passage opening. For example, the first passage opening can comprise a circular shape as the basic shape, while the second passage opening can comprise an oblong hole shape. A basic shape can be in particular a circular shape, an oblong hole shape, a rectangle shape, a triangle shape, an oval shape, a polygon shape, or another shape.
However, the fact that passage openings have different geometric shapes from one another can also mean that the passage openings do have an identical geometric basic shape, for example, an oblong hole shape or a rectangle shape, but different orientations from one another, in particular in the reference coordinate system. In particular, central longitudinal axes of the passage openings can have different orientations from one another.
For example, a geometric shape and/or orientation of a passage opening which is arranged in or on a first longitudinal edge of the base part or the receptacle section of the base part can be different from a geometric shape of a passage opening which is arranged on an opposing longitudinal edge or on a transverse edge.
A production of the stationary part, in particular by a casting method, can be simplified by the geometric shapes different from one another. In particular, the geometric shape of the individual passage openings can be selected in such a way that the production of the stationary part as a casting is performed having a reliable material distribution of the casting material into a casting mold of the casting. The casting mold comprises sections or elements in this case which define the location and shape of the passage openings, wherein the casting material flows around the sections or elements.
In a further embodiment, geometric shapes of passage openings arranged along a predetermined direction are selected in such a way that a pressure resistance associated with the passage openings increases along the predetermined direction.
The pressure resistance associated with a passage opening is in this case a pressure resistance of a body around which flow occurs against a fluid flowing along the predetermined direction, in particular of the casting material flowing along the predetermined direction, wherein an outer surface of the body around which flow occurs has a geometric shape corresponding to the passage opening. If the geometric shape of Date Recue/Date Received 2020-05-14 the passage opening is designed, for example, as a circle having a predetermined diameter, the body around which flow occurs can thus be a cylinder having circular cross section and the same diameter.
The predetermined direction can be in particular a casting direction. The predetermined direction can be, for example, oriented in parallel to the longitudinal direction or in parallel to the transverse direction. In this case, material is poured into a casting mold, which then flows along the casting direction and fills the casting mold.
The fact that the passage openings are arranged along the predetermined direction does not necessarily mean that they are arranged along a straight line which is oriented in parallel to the predetermined direction.
A simple and reliable production of the stationary part advantageously results in this way, in particular by a casting method. In particular, it is ensured that a material distribution during the casting is not prevented or obstructed by the sections or elements of the casting mold which define the location and geometric shape of the passage openings in the stationary part.
In a further embodiment, a passage opening which is arranged in or adjacent to a first subsection of the support section of the base part has a geometric shape which is different from a geometric shape of a passage opening which is arranged in or adjacent to a further subsection of the support section. In this way, the passage opening can be arranged in particular in an edge section of the subsection in each case.
Alternatively or additionally, a passage opening which is arranged in a first edge section of the stationary part has a geometric shape which is different from a geometric shape of a passage opening which is arranged in a further edge section of the stationary part.
The first subsection of the support section can be arranged in this case along the predetermined direction, in particular a casting direction, in front of the further subsection of the support section. Accordingly, the first subsection can be arranged along the predetermined direction in front of the further edge section of the stationary part. For example, the first subsection can be arranged adjacent to a first longitudinal edge or a first transverse edge of the stationary part and/or of the receptacle section of Date Recue/Date Received 2020-05-14 the stationary part, wherein the further subsection can be arranged adjacent to an opposing longitudinal edge or an opposing transverse edge of the stationary part and/or the receptacle section of the stationary part.
The first edge section can also correspond to a first longitudinal edge or first transverse edge, wherein the further edge section corresponds to an opposing longitudinal edge or opposing transverse edge.
For example, passage openings, which are arranged in or adjacent to a first subsection of the support section of the base part or in the first edge section, can have a circular shape.
Passage openings, which are arranged in or adjacent to a further subsection or in the further edge section, can have an oblong hole shape. An oblong hole can refer in this case to an oblong passage opening, the narrow sides of which are terminated by semicircles.
In this case, a longitudinal axis of the oblong hole can be oriented in parallel to the predetermined direction, but preferably orthogonally to the predetermined direction.
It is possible that passage openings are arranged both on the longitudinal edges and also on the transverse edges of the stationary part and/or the support section and/or in sections which extend parallel to these edges. In this case, the passage openings arranged in/on the transverse edges can also have geometric shapes which are different from the geometric shapes of passage openings which are arranged in/on a first longitudinal edge. The passage openings arranged in/on the transverse edges can also have geometric shapes which are different from the geometric shapes of the passage openings which are arranged in/on an opposing longitudinal edge.
An improved adaptation to production conditions, in particular to a casting method, thus advantageously results.
Furthermore, a device for inductive energy transfer is proposed having a stationary part according to one of the embodiments disclosed in this disclosure. The device for inductive energy transfer comprises in this case a movable part, wherein the folded Date Recue/Date Received 2020-05-14 bellows is fastened on the movable part. A lever mechanism, which also connects the stationary part to the movable part, can be arranged in the inner volume encompassed by the folded bellows. Furthermore, electrical connecting means, for example, cables, can be arranged in the inner volume, by which elements of the movable part are connected to elements of the stationary part.
Furthermore, a method is proposed for producing a stationary part according to an embodiment disclosed in this disclosure. The method comprises in this case all production steps for producing such a stationary part. In particular, a base part can be provided. The base part can be provided in particular by a casting method. In this case, the casting material can be poured into a casting mold, wherein the base part has a desired shape after curing of the casting material. The casting mold can be formed in this case in such a way that the stationary part (after the curing) comprises at least one passage opening, wherein the at least one passage opening is arranged in a region of the base part encompassed by the folded bellows and/or in a region outside the region of the base part encompassed by the folded bellows.
Furthermore, a folded bellows is provided and fastened on the base part. The folded bellows can in particular be fastened with a stationary-part-side end section on the stationary part, in particular on a receptacle section of the stationary part.
Furthermore, at least one passage opening of the stationary part is provided.
This can take place in the scope of the above-explained casting method. Of course, however, it is also possible that the passage opening is introduced into the base part after provision of the base part, for example, by drilling, stamping, or by a further method for introducing a passage opening.
Furthermore, a wall section, a support section for the stationary-part-side end section of the folded bellows, a means for fluid guiding, in particular a duct or a groove, and/or a bevel toward the passage opening can be provided subsequently or in the scope of the explained casting method.
Furthermore, at least two passage openings can be provided which have geometric shapes different from one another. This can also be ensured by the above-explained casting method.
Date Recue/Date Received 2020-05-14 In particular, casting material can be poured along a predetermined casting direction into a casting mold, wherein the casting mold comprises sections or elements along the casting direction for defining the location and geometric shape of the passage openings, wherein a pressure resistance of these sections or elements increases along the predetermined direction.
Furthermore, a method is also described for producing a device for inductive energy transfer having a stationary part and a movable part. In this case, the stationary part can be provided according to one of the methods for production described in this disclosure.
Furthermore, a movable part can be provided and can be connected to the stationary part. Furthermore, the folded bellows can be fastened on the movable part.
The invention will be explained in greater detail on the basis of exemplary embodiments.
In the figures:
Figure 1 shows a schematic top view of a stationary part according to an embodiment according to the invention and Figure 2 shows a schematic side view of a device according to the invention for inductive energy transfer.
Figure 1 shows a schematic top view of a stationary part 1 of a device 2 for inductive energy transfer. The stationary part 1 comprises a base part 3. Furthermore, the stationary part 1 comprises a housing section 4 and a receptacle section 5 for accommodating a movable part 6 (see Figure 2). Furthermore, the stationary part 1 comprises a folded bellows 7 (see Figure 2), which is fastened on the base part 3. The folded bellows 7 is identified in the top view by a shaded region.
Furthermore, a longitudinal direction x and a transverse direction y of a reference coordinate system are shown. The longitudinal direction x and the transverse direction y are oriented perpendicularly to one another in this case.
Furthermore, a region 8 encompassed by the folded bellows 7, which can also be referred to as an inner region, and a region 9 outside the region encompassed by the folded bellows 7, which can also be referred to as an outer region, are shown.
The Date Recue/Date Received 2020-05-14 regions 8, 9 can be subregions of the receptacle section 5 of the stationary part 1 in this case.
It is furthermore shown that the stationary part 1, in particular the receptacle section 5, comprises passage openings 10 in the base part 3, wherein the passage openings are arranged in the inner region 8. Furthermore, further passage openings 11 in the base part 3 of the stationary part 1 are shown, in particular of the receptacle section 5, wherein these passage openings 11 are arranged in the outer region 9.
Furthermore, a wall section 12 is shown, wherein the wall section 12 is arranged in the outer region 9. A receptacle section 13 of the base part 3 for the folded bellows 7 is separated from a cooling duct section 14 by the wall section 12, wherein the cooling duct section 14 is arranged in the outer region 9. The wall section 12 can be arranged on a foundation plate of the base part or can be formed thereby.
It is shown that the passage openings 11 are arranged in the outer region 9 in the support section 13 and/or in a region of the base part 3 which is adjacent to the support section 13.
Furthermore, a means 15 for fluid guiding formed as a groove is schematically shown.
By means of the groove 15, fluid, in particular water, can be transported from adjacent regions of the passage openings 11 toward the respective passage opening 11.
Furthermore, it is shown that passage openings 11 a of a first set of passage openings 11 are formed to be circular. Passage openings 11b, 11c of a second and a third set of passage openings 11 are formed as oblong holes. The passage openings 11a, 11 b, 11c of the first, second, and third set of passage openings 11 are arranged in the outer region. Passage openings 10 of a fourth set of passage openings are formed to be circular and are arranged in the inner region 8.
Furthermore, it is shown that orientations of the longitudinal axes of the passage openings 11 b, 11c formed as oblong holes are different from one another. In particular, a central longitudinal axis of passage openings llb of the second set of passage openings llb is oriented in parallel to the transverse direction y, while a central Date Recue/Date Received 2020-05-14 longitudinal axis of passage openings 11c of the third set of passage openings 11c is oriented in parallel to the longitudinal direction x.
The passage openings 10, 11, 11a, 11 b, 11c and/or ducts formed by these passage openings extend through the base part 3 and/or a foundation plate of the base part 3, in particular from an upper side to a lower side.
The stationary part 1 can be produced as a cast part. In this case, a casting mold can be provided in such a way that casting material flows into the casting mold from a first longitudinal edge 16a toward a second longitudinal edge 16b of the stationary part Ito be produced. In this case, the casting material firstly flows against the sections of the casting mold which form the location and formation of the passage openings 11 a of the first set of passage openings 11, wherein these passage openings lla are arranged in the region of the first longitudinal edge 16a. Furthermore, the casting material flows against sections of the casting mold which define the location and formation of the passage openings llb of the second set of passage openings 11, wherein these are arranged in the region of the transverse edges. Thirdly and lastly, the casting material flows against the passage openings 11c of the third set of passage openings 11, which are arranged in the second longitudinal edge 16b, wherein the second longitudinal edge 16b is arranged in a flow direction behind the first longitudinal edge 16a.
The casting material thus flows along a flow direction which is oriented in parallel to the transverse direction y.
A pressure resistance of the sections which define the location and formation of the passage openings lla of the first set, the passage openings llb of the second set, and the passage openings 10 of the fourth set is less in this case than a pressure resistance of the sections which define the location and formation of the passage openings 11c of the third set of passage openings 11.
Furthermore, the pressure resistances of the sections which define the location and formation of the passage openings lla of the first set and the passage openings llb of the second set and also the passage openings 10 of the fourth set can also differ from one another.
Date Recue/Date Received 2020-05-14 Furthermore, a beveled region 17 is shown, which is arranged around a passage opening 10 in the inner region. In this case, the beveled region 17 is formed in such a way that it is beveled toward the passage opening 10. Fluid, in particular water, can flow toward the passage opening 10 thanks to the beveled surface.
Figure 2 shows a schematic side view of a device 2 according to the invention for inductive energy transfer. In this case, the stationary part 1 having the housing section 4 and the receptacle section 5 is shown. Furthermore, the base part 3, which is part of the stationary part 1, is shown. Furthermore, a movable part 6 is shown. The movable part 6 can be moved by means of means (not shown) for movement in an opposite to a vertical direction z, wherein the vertical direction z is oriented perpendicular to the longitudinal direction x and to the transverse direction y (see Figure 1).
The movable part 6 is shown in the extended state. In the retracted state, the movable part 6 rests on a surface of the base part 3, in particular in the receptacle section 5.
The passage openings 11, 11a, which are arranged in the region of the first longitudinal edge 16a in the outer region 9, are shown. Further passage openings 10, 11 b, 11c, which are shown in Figure 1, for example, are not shown in this case.
Furthermore, the wall section 12, which extends around the support section 13 for the folded bellows 7, is shown. It is shown that passage openings 18, by which an inner volume 19 enclosed by the wall section 12 is connected to the support section 13, are arranged in a side wall section of the wall section 12. Passage openings 18 extend through the side wall section and through the base part 3 or the foundation plate of the base part 3, in particular from an upper side to a lower side. It is furthermore shown that the inner volume 19 of the wall section 12 is open toward a lower side of the base part 1. In this way, water can drain off from the support section 13 through the side walls of the wall section 12 to the lower side. It is furthermore shown that the lower side is fastened on a holding structure 19, for example, a base or a wall. In other words, Figure 2 shows that a part of the duct formed by the passage opening 18 can be arranged in a side wall section, wherein a further, in particular remaining part is arranged in the base part 3 or in the foundation plate of the base part 3.
Figure 3 shows a schematic flow chart of a method for producing a stationary part 1. In a first step Sl, a base part is provided. The base part can be provided by a casting Date Recue/Date Received 2020-05-14 method, as explained above. Furthermore, at least one passage opening 10, 11 of the stationary part 1 is provided. This can be performed in the scope of the explained casting method.
In a second step S2, a folded bellows 7 is provided and fastened on the base part 3.
The folded bellows 7 can in particular be fastened with a stationary-part-side end section on the stationary part 1, in particular on a receptacle section of the stationary part.
Furthermore, at least two passage openings 10, 11a, 11b, 11c can be provided, which have geometric shapes different from one another. These can also be ensured by the above-explained casting method. In particular, casting material can be poured along a predetermined casting direction into a casting mold, wherein the casting mold comprises sections or elements along the casting direction for defining the location and geometric shape of the passage openings, wherein a pressure resistance of these sections or elements increases along the predetermined direction.
Date Recue/Date Received 2020-05-14 List of reference numerals 1 stationary part 2 device for inductive energy transfer 3 base part 4 inner region outer region 6 movable part 7 folded bellows 8 inner region 9 outer region passage opening in the inner region 11 passage opening in the outer region 11 a passage opening of a first set of passage openings 11 b passage opening of a second set of passage openings 11c passage opening of a third set of passage openings 12 wall section 13 support section 14 cooling duct section groove 16a first longitudinal edge 16 longitudinal edge opposite to the first longitudinal edge 17 beveled region 18 passage opening 19 holding structure Date Recue/Date Received 2020-05-14
Claims (14)
1. A stationary part of a device (2) for inductive energy transfer, wherein the stationary part (1) comprises a base part (3), wherein the stationary part (1) comprises a folded bellows (7), which is fastened on the base part (3), wherein the stationary part comprises at least one passage opening (10, 11, 18), characterized in that the at least one passage opening (10, 11, 18) is arranged in a region of the base part (3) encompassed by the folded bellows (7) or in a region outside the region of the base part (3) encompassed by the folded bellows (7), wherein a passage opening (10, 11, 18) is arranged in a base surface of the base part (3) or extends through the base surface of the base part (3).
2. The stationary part as claimed in claim 1, characterized in that the base part (3) comprises or forms a wall section (12) protruding from a base surface of the base part (3), wherein the passage opening (18) is arranged in the wall section (12).
3. The stationary part as claimed in any one of the preceding claims, characterized in that the stationary part (1) comprises or forms a support section (13) for a stationary-part-side end section of the folded bellows (7), wherein the at least one passage opening (11) is arranged outside the region of the base part (3) encompassed by the folded bellows (7) and in an edge section of the support section (13) or in a section of the base part (3) adjacent to the support section (13).
4. The stationary part as claimed in any one of the preceding claims, characterized in that the base part (3) comprises or forms at least one means for fluid guiding of a fluid toward the at least one passage opening (10, 11).
5. The stationary part as claimed in any one of the preceding claims, characterized in that the means for fluid guiding is formed as a duct or as a groove (15).
6. The stationary part as claimed in any one of the preceding claims, characterized in that at least a part of the section (17) of the base part enclosing the passage opening (10) is beveled toward the passage opening (10).
7. The stationary part as claimed in any one of the preceding claims, characterized in that the base part (3) comprises at least two passage openings (11, 11b, 11c), wherein the passage openings (11a, 11b, 11c) have geometric shapes different from one another.
8. The stationary part as claimed in any one of the preceding claims, characterized in that geometric shapes of passage openings (11a, 11b, 11c) arranged along a predetermined direction are selected in such a way that a pressure resistance associated with the passage openings (11a, 11 b, 11c) increases along the predetermined direction, wherein the pressure resistance associated with a passage opening (11a, 11b, 11c) is a pressure resistance of a body around which flow occurs against a fluid flowing along the predetermined direction, wherein an outer surface of the body around which flow occurs has a geometry corresponding to the passage opening (11a, 11b, 11c).
9. The stationary part as claimed in any one of the preceding claims, characterized in that a passage opening (11a), which is arranged in or adjacent to a first subsection of the support section (13), has a geometric shape which is different from a geometric shape of a passage opening (11c), which is arranged in or adjacent to a further subsection of the support section (13), and/or in that a passage opening (11a), which is arranged in a first subsection (16a) of the stationary part (1) has a geometric shape which is different from a geometric shape of a passage opening (11c), which is arranged in a further subsection (16b) of the stationary part (1).
10.A device for inductive energy transfer having a stationary part (1) as claimed in any one of claims 1 to 9, characterized in that the device (2) for inductive energy transfer comprises a movable part (6), wherein the folded bellows (7) is fastened on the movable part (6).
11.A method for producing a stationary part (1) of a device (2) for inductive energy transfer, wherein ¨ a base part (3) is provided, ¨ a folded bellows (7) is provided and is fastened on the base part (3), ¨ at least one passage opening (10, 11) of the stationary part (1) is provided, wherein the at least one passage opening (10, 11, 18) is arranged in a region of the base part (3) encompassed by the folded bellows (7) or in a region outside the region of the base part (3) encompassed by the folded bellows (7), wherein a passage opening (10, 11, 18) is arranged in a base surface of the base part (3) or extends through the base surface of the base part (3).
12. The method as claimed in claim 11, characterized in that the base part (3) is provided by a casting method.
13. The method as claimed in claim 11 or 12, characterized in that the at least one passage opening (10, 11, 18) is provided in the scope of the casting method and/or is introduced into the base part (3) after provision of the base part (3).
14. The method as claimed in one of claims 12 or 13, characterized in that the casting material is poured along a predetermined casting direction into a casting mold, wherein the casting mold comprises sections or elements along the casting direction for defining the location and geometric shape of the passage openings (10, 11, 18), wherein a pressure resistance of these sections or elements increases along the predetermined direction.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE202017106936.2U DE202017106936U1 (en) | 2017-11-15 | 2017-11-15 | Device for inductive energy transfer and stationary part |
| DE202017106936.2 | 2017-11-15 | ||
| PCT/EP2018/081363 WO2019096899A1 (en) | 2017-11-15 | 2018-11-15 | Device for inductive energy transfer, and stationary part, and method for producing a stationary part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA3082731A1 true CA3082731A1 (en) | 2019-05-23 |
Family
ID=64332300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA3082731A Abandoned CA3082731A1 (en) | 2017-11-15 | 2018-11-15 | Device for inductive energy transfer and stationary part and method for producing a stationary part |
Country Status (3)
| Country | Link |
|---|---|
| CA (1) | CA3082731A1 (en) |
| DE (1) | DE202017106936U1 (en) |
| WO (1) | WO2019096899A1 (en) |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5342993A (en) * | 1993-01-04 | 1994-08-30 | Siems Steven L | Weather-proof floor outlet and method |
| EP0694433A1 (en) * | 1994-07-29 | 1996-01-31 | Electricite De France | Electrical power delivery pole |
| DE102011076186A1 (en) * | 2011-05-20 | 2012-11-22 | Siemens Aktiengesellschaft | Arrangement and method for eliminating a disturbance of a wireless energy transmission |
| DE102011119606B3 (en) * | 2011-11-29 | 2013-04-11 | Sew-Eurodrive Gmbh & Co. Kg | Inductive charging station for vehicle i.e. passenger car, has plate element including threaded portions whose screw thread diameter is larger than screw thread diameter of threaded portions of frame element |
| GB201403547D0 (en) | 2014-02-28 | 2014-04-16 | Bombardier Transp Gmbh | Inductive power transfer pad, system for inductive power transfer and method of operating an inductive power transfer pad |
| DE102014000738A1 (en) * | 2014-01-21 | 2015-08-06 | Audi Ag | Shielding device for shielding electromagnetic radiation in a contactless energy transmission, energy transmission device and arrangement for contactless energy transmission |
| GB201403548D0 (en) * | 2014-02-28 | 2014-04-16 | Bombardier Transp Gmbh | Inductive power transfer pad comprising a stationary part and a moveable part |
| JP6176396B2 (en) * | 2014-05-19 | 2017-08-09 | 株式会社Ihi | Cooling device and non-contact power supply system |
| GB2546776A (en) * | 2016-01-28 | 2017-08-02 | Bombardier Primove Gmbh | An inductive power transfer pad, system for inductive transfer and method of operating an inductive power transfer pad |
-
2017
- 2017-11-15 DE DE202017106936.2U patent/DE202017106936U1/en not_active Expired - Lifetime
-
2018
- 2018-11-15 WO PCT/EP2018/081363 patent/WO2019096899A1/en active Application Filing
- 2018-11-15 CA CA3082731A patent/CA3082731A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| DE202017106936U1 (en) | 2018-12-18 |
| WO2019096899A1 (en) | 2019-05-23 |
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