• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Device (100) for the generation or reception of an electromagnetic field comprising electrical conductive means (110) and magnetic elements (120) which are configured for the generation or reception of the electromagnetic field, and a sheath of electrical conductive means (110) and of the magnetic elements (120) having an electrically conductive part (130) for shielding the electromagnetic field and another electrically non-conductive part (140) that allows transmission of the electromagnetic field, wherein the electrical conductive means (110) they are disposed facing the electrically non-conductive part (140), and wherein the electrically non-conductive part (140) of the enclosure comprises a hollow central region (141) in which the electrical conductive means (110) and the elements are housed. magnets (120), the hollow central region (141) having channels (142) reciprocally to the conductive means electric lights (110). (Machine-translation by Google Translate, not legally binding)
    公开号:ES2716485A1
    申请号:ES201731389
    申请日:2017-12-05
    公开日:2019-06-12
    发明作者:Beristain Ruth Arregi；Irizar Pedro Estevez；Jauregui Adrian Ramirez；ITURBE Irma VILLAR
    申请人:Construcciones y Auxiliar de Ferrocarriles CAF SA；
    IPC主号:
    专利说明:

    [0001]
    [0002]
    [0003]
    [0004] Sector of the technique
    [0005]
    [0006] The invention relates to the field of wireless energy transfer by inductive coupling, in particular it relates to a device of preferred application in railway vehicles that is configured to generate or receive an electromagnetic field for charging the energy storage means vehicle.
    [0007]
    [0008] State of the art
    [0009]
    [0010] At present, there is a tendency to obtain electric vehicles with high performance and sufficient autonomy that can replace current fossil fuel systems.
    [0011]
    [0012] Currently the development of electric vehicles presents a series of problems related to the capacity of storage media of the electric power of the vehicle (batteries, supercapacitors or similar), its charging time and physical means for the connection of electric vehicles to the charging stations of the storage media.
    [0013]
    [0014] In relation to the last aspect contact-based systems of "plug-in" type are valid connection means to power individual vehicles, for example, taking advantage of night periods, however they are not for public transport vehicles, since not to interrupt the service operation, the load can only be made at certain points of the route, such as the beginning and end of line, which involves using bulky storage means.
    [0015]
    [0016] To solve this problem, for example, power transfer systems by inductive coupling ("ICPT", "Inductive Coupling Power Transfer") are known, which allow vehicles to be recharged without human intervention and without electrical risks. For example, in the case of trams or electric buses, the load can be carried out during the periods of stop, recovering the energy consumed between two stops and therefore considerably reducing the weight of the storage means.
    [0017]
    [0018] An "ICPT" system is composed of an emitting device for the generation of an electromagnetic field, generally located in the infrastructure through which the vehicle circulates, and a receiving device that receives the electromagnetic field, generally shipped in the vehicle.
    [0019]
    [0020] These devices comprise electrical conductive means, such as a coil, and magnetic elements, for example ferrites, configured for the generation or reception of the electromagnetic field, and an envelope of the electrical conductive means and of the magnetic elements having a part of electrically conductive material for the shielding of the electromagnetic field and another part of electrically non-conductive material that allows the transmission of the electromagnetic field. In these devices, the electrical conductors are confronted with the non-conductive part of the enclosure, so that the emitter and receiver devices of the system are confronted by their non-conductive part, which allows the transmission of the electromagnetic field. However, in this arrangement, the electrical conductors of the system are not sufficiently close to each other, which decreases the efficiency of the power transfer between the devices.
    [0021]
    [0022] In addition, this arrangement presents another problem, since not only voltage is induced in the electrical conductive means of the receiver device, but also a current is induced in the enclosure and especially in the areas of connection between the conductive part and the non-conductive part. of the envelope, which reduces the level of magnetic coupling between the devices.
    [0023]
    [0024] In addition these devices, and mainly the emitting device located in the infrastructure, are subject to high structural loads because they must support the weight of the vehicles that pass over them, which can lead to the breakage of the envelope.
    [0025]
    [0026] Therefore, an alternative configuration of the devices for the generation or reception of electromagnetic fields is necessary to increase the performance of the transfer of power between devices at the same time that presents an improved structural configuration that allows to resist the high loads to which it is subjected.
    [0027]
    [0028] Object of the invention
    [0029]
    [0030] The invention relates to a device for the generation or reception of an electromagnetic field with an improved structural configuration that allows solving the aforementioned problems. The invention is of preferential application in railway vehicles, such as for example trains or trams, although it can be applied to other types of land vehicles such as cars, buses or the like.
    [0031]
    [0032] The device for generating or receiving an electromagnetic field comprises:
    [0033]
    [0034] • electrical conductive means and magnetic elements that are configured for the generation or reception of the electromagnetic field, and
    [0035]
    [0036] • an envelope of the electrical conductive means and of the magnetic elements that has an electrically conductive part for shielding the electromagnetic field and another electrically non-conductive part that allows the transmission of the electromagnetic field, wherein the electrical conductive means are arranged facing the electrically non-conductive
    [0037]
    [0038] According to the invention, the electrically nonconductive part of the envelope has a hollow central area where the electrical conducting means and the magnetic elements are housed. The hollow central region has channels reciprocally to the electric conductive means, such that the electrical conducting means are arranged in the channels of the hollow central zone.
    [0039]
    [0040] With this arrangement, the electrical conductive means are arranged in the electrically non-conductive part of the enclosure through which the electromagnetic field is transmitted, so that when an emitting device of the electromagnetic field facing a receiving device thereof is provided, it is guaranteed that the electrical conductive means of both devices are close to each other and that there is no electrical conductor element between them that can reduce the performance of the power transfer. In addition, in this arrangement the electrical conductive means remain separated from the side walls of the envelope as they are arranged in the central hollow area, thereby reducing the possibility of unwanted currents being induced in the envelope which may reduce the power transfer.
    [0041]
    [0042] The channels act as a guide for the electrical conductor means and, in addition, since the electric conductor means are partially integrated in the electrically non-conductive part of the enclosure, the distance between the electrical conductors of two facing transmitter and receiver devices is also reduced.
    [0043]
    [0044] Preferably the electrically nonconductive part of the casing has ribs that are located on the periphery of the hollow central area, thereby providing rigidity to the electrically nonconductive part of the casing that allows to improve the structural behavior of the casing in front. to the high loads to which it is subjected.
    [0045]
    [0046] The magnetic elements are arranged in a support that is inserted in the hollow central region of the electrically non-conductive part of the enclosure. The support has an outer perimeter contour reciprocally to the inner perimetric contour of the hollow central area, so that the support disposed within the hollow central area provides additional rigidity to the envelope improving its behavior against loads.
    [0047]
    [0048] Said support has housings in which the magnetic elements are inserted. The housings of the magnetic elements face the electrical conductive means, so that the magnetic elements are kept away from the electrically conductive part of the envelope and close to the electrical conductive means, whereby the addressing of the electromagnetic field is improved.
    [0049]
    [0050] It is envisaged that the electrically non-conductive part of the shell be made of a fiber-reinforced composite material. It is also envisaged that the support of the magnetic elements also be made of a fiber-reinforced composite material. For example, the composite material reinforced with fibers of both elements can be polyester reinforced with glass fibers, which provides the necessary rigidity while not interfering with the electromagnetic field.
    [0051]
    [0052] On the other hand, it has been foreseen that the electrically conductive part of the enclosure is made of aluminum, a light material suitable for shielding the electromagnetic field.
    [0053] With all this a device for the generation or reception of an electromagnetic field is obtained with an improved arrangement of its constituent elements that allows to increase the efficiency of the power transfer compared to the solutions of the state of the art, at the same time that it results in an improved structural configuration to withstand the loads to which the device is subjected during its operation.
    [0054]
    [0055] Description of the figures
    [0056]
    [0057] Figure 1 shows a schematic of an electric power transfer system by inductive coupling according to the state of the art
    [0058]
    [0059] Figure 2 shows an exploded perspective view of the elements forming the device for generating or receiving an electromagnetic field of the invention.
    [0060]
    [0061] Figure 3 shows a perspective view of the support for the arrangement of the magnetic elements.
    [0062]
    [0063] Figure 4 shows a perspective view of the electrically nonconductive part of the enclosure where the electrical conductive means and the magnetic elements are arranged.
    [0064]
    [0065] Detailed description of the invention
    [0066]
    [0067] Figure 1 shows a diagram of an electric power transfer system by inductive coupling "ICPT" according to the state of the art. The system comprises two opposing devices (10, 10 ') having the same structural configuration, one operating in the configuration of emitting an electromagnetic field and another operating in the electromagnetic field reception configuration. The receiver device (10) is located in an electric vehicle that has energy storage means to be charged (not shown) and the emitting device (10 ') is located in the infrastructure through which the electric vehicle circulates.
    [0068]
    [0069] The receiving device (10) comprises electrical conductive means (11) and magnetic elements (12) that are configured for receiving the field electromagnetic and the emitting device (10 ') comprises other electrical conductive means (11') and other magnetic elements (12 ') which are configured for the emission of the electromagnetic field.
    [0070]
    [0071] In both devices (10, 10 ') the electrical conductive means (11, 11') and the magnetic elements (12, 12 ') are located in an enclosure (13, 13', 14,14 ') which has a part of electrically conductive material (13,13 ') for the shielding of the electromagnetic field and another part of electrically non-conductive material (14,14') that allows the transmission of the electromagnetic field.
    [0072]
    [0073] The electrical conductive means (11, 11 ') and the magnetic elements (12, 12') are located on supports (15, 15 ') made of plastic material so that the electrical conductive means (11, 11') are confronted with the part of electrically nonconductive material (14, 14 ') of the shell and the magnetic elements (12, 12') are faced with the electrically conductive material part (13, 13 ') of the shell, thus the electrical conductive means (11, 11 ') are remote from the electrically conductive material part (13, 13') and close to the part of electrically non-conductive material (14, 14 ') of the enclosure.
    [0074]
    [0075] In this way the electrical conductive means (11, 11 ') of each device (10, 10') are facing and relatively close to each other for the transmission of the electromagnetic field. However, the generated magnetic field (B) not only induces voltage in the electrical conductor means (11) of the device (10) boarded in the vehicle, but also induces a current in the envelope and especially in the junction zone ( 16) between the electrically conductive material part (13,13 ') of the enclosure and the electrically non-conductive material part (14,14') of the enclosure, thereby reducing the level of magnetic coupling between the devices ( 10, 10 ').
    [0076]
    [0077] Figures 2 to 4 of the invention show an improved arrangement of a device (100) for the generation or reception of an electromagnetic field, which allows to improve the performance of electric power transfer systems by inductive coupling "ICPT" .
    [0078]
    [0079] The device (100) comprises electrical conductive means (110) that generate or receive the electromagnetic field, magnetic elements (120) that conduct the electromagnetic field and a housing (130, 140) where the means are arranged electrical conductors (110) and magnetic elements (120).
    [0080]
    [0081] The enclosure (130, 140) has an electrically conductive part (130) that shields the electromagnetic field and another electrically non-conductive part (140) that allows the transmission of the electromagnetic field, wherein the electrical conductive means (110) are arranged facing the electrically non-conductive part (140) of the envelope.
    [0082]
    [0083] The electrically non-conductive part (140) of the envelope has a central hollow zone (141) defined at its center as a cavity in which the electrical conductive means (110) and the magnetic elements (120) are housed.
    [0084]
    [0085] The magnetic elements (120) are arranged in a support (150) of electrically non-conductive material that is inserted in the hollow central region (141) of the electrically non-conductive part (140) of the enclosure. The support (150) has housings (151) in which the magnetic elements (120) are inserted, the housings (151) being arranged on the upper face of the support (150) in such a way that they face the electrical conductive means (110). ), while the opposite face of the support (150) faces the electrically conductive part (130) of the envelope.
    [0086]
    [0087] As seen in detail in Figure 4, the electrically non-conductive part (140) of the shell has a flat rectangular shape with a thickness similar to the thickness of the electrical conductive means (110) plus the thickness of the support (150), of so that the electrical conductive means (110) and the support (150) with the magnetic elements (120) are fitted in the hollow central region (141) of the electrically non-conductive part (140) of the enclosure.
    [0088]
    [0089] The central hollow area (141) has machined channels (142) in its lower area that have a reciprocal shape to the electrical conductive means (110). The electrical conductive means (110) have a coil shape, that is, they are an electrical conductor wire of one or more turns, so that the wire is disposed in the channels (142) of the hollow central region (141). The channels (142) have the function of guiding the yarn in the envelope (140). In addition, the channels (142) allow the wires of the electrical conductive means (110) to be partially integrated in the envelope (140) and therefore to be arranged as close as possible to the electrical conductor means (110) of the other "ICPT" system device.
    [0090]
    [0091] It is envisioned that the electrical conductive means (110) is a Litz yarn.
    [0092]
    [0093] As seen in Figure 4 the electrically non-conductive part (140) of the shell has ribs (143) which are located around the central hollow area (141) which provide rigidity to the shell so that it can withstand the loads to which it is subjected by the weight of vehicles that pass over it.
    [0094]
    [0095] As seen in Figure 4, the hollow central region (141) of the electrically non-conductive part (140) of the shell has a perimetral contour reciprocally to the outer perimeter contour of the support (150) comprising the magnetic elements (120). ), so that the support (150) is fitted in the hollow central area (141) providing additional rigidity to the envelope to support the loads.
    [0096]
    [0097] The electrically non-conductive part (140) of the shell and the support (150) are made of a fiber-reinforced composite material, such as polyester reinforced with glass fibers, while the electrically conductive part (130) of the shell is a conductive material, such as aluminum.
    [0098]
    [0099] Accordingly, the electrically conductive part (130) of the enclosure is a flat cover that is disposed on the electrically non-conductive part (140), so that the electrical conductive means (110) and the magnetic elements (120) remain. arranged in the central hollow area (141), whereby when two devices (100) are arranged facing each other to perform a magnetic coupling, the electrical conducting means (110) of both devices (100) are as close as possible to each other and without that there is no electrical conductive element between them that could reduce the performance of the magnetic coupling.
    权利要求:
    Claims (12)
    [1]
    1. - Device (100) for the generation or reception of an electromagnetic field, comprising:
    • electrical conductive means (110) and magnetic elements (120) that are configured for the generation or reception of the electromagnetic field, and
    • an enclosure of the electrical conductive means (110) and of the magnetic elements (120) having an electrically conductive part (130) for shielding the electromagnetic field and another electrically non-conductive part (140) that allows the transmission of the electromagnetic field, wherein the electrical conducting means (110) are disposed facing the electrically non-conductive part (140),
    characterized in that the electrically non-conductive part (140) of the casing has a hollow central region (141) where the electrical conductive means (110) and the magnetic elements (120) are housed, and why the central hollow area (141). ) has channels (142) reciprocally to the electrical conductive means (110), such that the electrical conductive means (110) are arranged in the channels (142) of the hollow central region (141).
    [2]
    2. - Device (100) for the generation or reception of an electromagnetic field, according to the preceding claim, characterized in that the electrically non-conductive part (140) of the enclosure has ribs (143) that are located on the periphery of the enclosure. central hollow area (141).
    [3]
    3. - Device (100) for the generation or reception of an electromagnetic field, according to any one of the preceding claims, characterized in that the magnetic elements (120) are arranged on a support (150) that is inserted in the central hollow area (141) of the electrically non-conductive part (140) of the enclosure.
    [4]
    4. - Device (100) for the generation or reception of an electromagnetic field, according to the preceding claim, characterized in that the support (150) has an outer perimeter contour reciprocally to the inner perimetric contour of the central hollow area (141) .
    [5]
    5. - Device (100) for the generation or reception of an electromagnetic field, according to any of claims 3 or 4, characterized in that the support (150) has housings (151) where the magnetic elements are inserted (120) ).
    [6]
    6. - Device (100) for the generation or reception of an electromagnetic field, according to the preceding claim, characterized in that the housings (151) of the magnetic elements (120) are facing the electrical conductive means (110).
    [7]
    7. - Device (100) for the generation or reception of an electromagnetic field, according to any one of the preceding claims, characterized in that the electrically non-conductive part (140) of the casing is made of a fiber-reinforced composite material.
    [8]
    8. - Device (100) for the generation or reception of an electromagnetic field, according to any one of claims 3 to 7, characterized in that the support (150) is a composite material reinforced with fibers.
    [9]
    9. - Device (100) for the generation or reception of an electromagnetic field, according to claim 7 or 8, characterized in that the fiber-reinforced composite material is polyester reinforced with glass fibers.
    [10]
    10. - Device (100) for the generation or reception of an electromagnetic field, according to any one of the preceding claims, characterized in that the electrically conductive part (130) of the enclosure is made of aluminum.
    [11]
    11. - Device (100) for the generation or reception of an electromagnetic field, according to any one of the preceding claims, characterized in that the electrical conductive means (110) is an electrical conductor wire of one or more turns.
    [12]
    12. - Device (100) for the generation or reception of an electromagnetic field, according to any one of the preceding claims, characterized in that the electrically conductive part (130) of the enclosure is a flat cover that is disposed on the part electrically not conductive (140), the electrical conductive means (110) and the magnetic elements (120) being housed in the hollow central region (141).
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    同族专利:
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    ES2716485B2|2020-06-29|
    WO2019110856A1|2019-06-13|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US20100109604A1|2007-05-10|2010-05-06|John Talbot Boys|Multi power sourced electric vehicle|
    EP2620960A1|2010-09-21|2013-07-31|Panasonic Corporation|Contactless power feeding apparatus|
    WO2014166942A2|2013-04-09|2014-10-16|Bombardier Transportation Gmbh|Inductive power transfer pad and system for inductive power transfer|
    US20150022142A1|2013-07-16|2015-01-22|Qualcomm Incorporated|Integration of electronic components in inductive power transfer systems|
    法律状态:
    2019-06-12| BA2A| Patent application published|Ref document number: 2716485 Country of ref document: ES Kind code of ref document: A1 Effective date: 20190612 |
    2020-06-29| FG2A| Definitive protection|Ref document number: 2716485 Country of ref document: ES Kind code of ref document: B2 Effective date: 20200629 |
    优先权:
    申请号 | 申请日 | 专利标题
    ES201731389A|ES2716485B2|2017-12-05|2017-12-05|DEVICE FOR THE GENERATION OR RECEPTION OF AN ELCTROMAGNETIC FIELD|ES201731389A| ES2716485B2|2017-12-05|2017-12-05|DEVICE FOR THE GENERATION OR RECEPTION OF AN ELCTROMAGNETIC FIELD|
    PCT/ES2018/070767| WO2019110856A1|2017-12-05|2018-11-30|Device for generating or receiving an electromagnetic field|
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