• 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:
    This conduction type system comprises: a pair of supply tracks, comprising a phase track (11), intended to be electrically connected to a voltage source, and a neutral track (12), for the return current, intended to be electrically connected to a reference potential, the neutral track flowing parallel to the phase track on a first side thereof; and a protective conductor track (13) for connection to a ground potential, the protective track flowing parallel to the phase track (11) on a second side thereof opposite the first side. The system is located in a pavement so that the phase, neutral and protection tracks are flush with a surface (18) of the roadway (2).
    公开号:FR3019113A1
    申请号:FR1452527
    申请日:2014-03-25
    公开日:2015-10-02
    发明作者:Jean-Luc Hourtane
    申请人:Alstom Transport Technologies SAS；
    IPC主号:
    专利说明:

    [0001] The invention relates to ground power systems for unguided electric vehicles.
    [0002] Electrically propelled vehicles are seen as an alternative to thermally propelled vehicles, with the aim of reducing greenhouse gas emissions. An electric vehicle comprises a rechargeable source of electrical power, such as a battery, and an electric motor, powered by the source and for propelling the vehicle. For unguided electric vehicles (ie trucks, vans, passenger cars, etc.) it is known to recharge the vehicle's battery, when it is stopped, by connecting the battery to a charging station, by means of an electric cable.
    [0003] It has also been proposed to recharge the battery of an unguided electric vehicle during its journey. To do this, two types of systems are considered: induction power systems and conduction power systems. Among the conduction feed systems, the document WO 2010 140964 discloses a roadway whose surface is provided with two grooves parallel to each other and to the direction of the roadway. Inside each of the grooves circulates one or more electrical power supply conductor rails. The flange of each groove is provided with a conductive rail electrically connected to ground. In order to receive electrical power from this underfloor power system, the unguided electric vehicle is provided with a pole whose end is adapted to penetrate the grooves of the roadway so as to come into electrical contact with the rails. 'food. When the supply rails are respectively brought to suitable potentials, electrical power is transmitted to the vehicle battery or possibly directly to its electric motor.
    [0004] However, such grooves are the cause of rolling problems. A wheel of small width may get stuck inside such a groove. This is particularly the case for a bicycle wheel. In addition, there is a significant loss of adhesion when the tire of a vehicle passes over the portion of the roadway where the grooves open.
    [0005] Finally, the edges of these grooves cause accelerated wear of the tires.
    [0006] Moreover, the fact that the grooves are open leads to the accumulation of rainwater in the grooves. This poses electrical problems of contacting the conductive rails. There is also accelerated corrosion of the conductor rails.
    [0007] Possibly these are covered with a layer of rust which hinders the contact with the end of the electric power collection boom. The object of the invention is to propose a floor feeding system for unguided electric vehicles. The subject of the invention is therefore a ground power system for non-guided electric vehicles, of the conduction type, characterized in that it comprises: a pair of supply tracks, comprising a so-called phase conducting track , intended to be electrically connected to a voltage source, and a so-called neutral conducting track, for the return of the current, intended to be electrically connected to a reference potential, the neutral track flowing parallel to the phase track on a first side of it; and, a protective conductive track, intended to be connected to an earth potential, the protective track circulating parallel to the phase track on a second side thereof, opposite to the first side, said system being intended to be implanted in a pavement so that the phase, neutral and protective conductive tracks are flush with a surface of the roadway. According to particular embodiments, the system comprises one or more of the following characteristics, taken separately or in any technically possible combination: the protective conductive track is electrically connected to a wire intended to be buried in the roadway; so as to put said protective conductive track at ground potential. the phase-conducting track consists of a plurality of elongated segments arranged end-to-end and electrically isolated from one another. each segment is electrically connected to an electric power source (35) by a controlled switch. - The protective conductive track consists of an upper surface of a section (14) sealed in the roadway. the conductive neutral conductor is constituted by a plurality of oblong segments arranged end-to-end and electrically connected to the reference potential Vref; the phase, neutral and protective conductive tracks are carried on a support assembly intended to to be drowned under the surface of the roadway. the protective conductive track is at a distance from the conductive phase track between 5 and 50 cm, preferably between 10 and 30 cm, in particular equal to 15 cm. the width of the protective conductive track is between 1 and 20 cm, preferably between 2.5 and 15 cm, in particular equal to 4 cm. - The conductive protective track is at the surface of the roadway. - The conductive phase and neutral track is between 0 and 5mm above the surface level of the roadway, including 2mm above the surface of the roadway. the system is intended to feed an unguided electric vehicle equipped with a means of capturing the clean current, during the displacement of the vehicle on the roadway, to be put in sliding contact on the two conducting tracks of phase and neutral, simultaneously.
    [0008] The invention will be better understood on reading the following description of a particular embodiment, given solely for illustrative and non-limiting purposes, and with reference to the appended drawings, in which: FIG. 1 is a view back showing schematically an unguided electric vehicle traveling on a floor equipped with the ground supply system according to the invention; FIG. 2 is a view from above of FIG. 1; - Figure 3 is a section of the ground supply system of Figures 1 and 2, ready to be implanted in the floor; and, - Figure 4 is a schematic representation of the electrical operation of the ground supply system according to the invention. With its experience in the field of conductive type ground-based power supply systems for guided electric vehicles, that is to say, forced to move along tracks, (in particular moving tramways) along railway tracks), the Applicant to develop the present ground power system for unguided electric vehicles. FIGS. 1 and 2 show a car 1, as an unguided electric vehicle, traveling on a roadway 2. An XYZ trihedron is conventionally associated with the car 1: the X axis in the longitudinal direction, facing the road before; the Y axis in the transverse direction, oriented from left to right; and the Z axis in the vertical direction, oriented from bottom to top.
    [0009] The car 1 comprises a body 4 and wheels 3, some of which are guidelines. The car 1 comprises steering means (not shown) allowing a driver to change the angle of the steering wheels in the XY plane so as to direct the vehicle 1.
    [0010] The car 1 comprises a rechargeable battery and an electric motor (not shown). The car 1 is equipped with a capture means for collecting electrical power during the movement of the car 1. The capturing means are referenced in general by the numeral 5.
    [0011] The pick-up means 5 has a slidable shoe slidably in contact with a pair of feed tracks of the underfloor feeding system, which will now be described. The floor 2 comprises a trench 6 inside which is positioned the ground supply system, generally referenced by the numeral 10.
    [0012] Once the system 10 placed in position in the trench 6, it is filled with concrete 7 so that the upper surface 8 of the roadway 2 is continuous over the entire width thereof. The upper surface 8 is substantially planar. In position, the system 10 has, flush with the surface 8 of the roadway 2: a conductive phase track 11, intended to be electrically connected to a source of electrical power, delivering for example a potential Vs of +750 V DC; a conductive neutral track 12 intended to be electrically connected to a reference potential Vref, for example of 0 V; - A protective conductive track 13, intended to be electrically connected to a ground potential (Vterre).
    [0013] The phase track 11 consists of a plurality of segments (11.i in FIG. 4) which, in the embodiment currently envisaged, each have a width of 10 cm and a length of 20 m. The segments are arranged end to end to form the phase track 11. The segments are electrically isolated from each other.
    [0014] Advantageously, the neutral track 12 is made using segments identical to those used for the phase track 11. Thus, the track 12 consists of a plurality of segments (12.i in FIG. about 10 cm and a length of about 20 m. It is not necessary, however, that the segments of the neutral track be electrically isolated from each other.
    [0015] The neutral track 12 flows parallel to the phase track 11, on a first side thereof. The lateral edge of the phase track 11 and the lateral edge of the neutral track 12, which are opposite one another, are spaced apart by a first distance of about 15 cm. The protective track 13 is constituted by the upper face of a profile 14 sealed in the concrete 7 filling the trench 6.
    [0016] In the presently preferred embodiment, the section 14 has an "I" -shaped section, the central core of which is arranged substantially vertically. The function of the protective track 13 is to constitute a means for collecting electrons of a leakage current coming from the phase conducting track 11. To do this, the protective track 13 is arranged parallel to the phase track 11 , on a second side of it. This second side is opposite the first side of the phase track 11 having the neutral track 12. The current leaks to the first side are collected by the neutral track 12. To collect the current leaks to the second side, the protection track 13 is placed on the second side of the phase track 11.
    [0017] The lateral edge of the phase track 11 and the lateral edge of the protective track 13, which are opposite one another, are spaced apart by a second distance of about 15 cm. In the embodiment envisaged, the width of the protective track 13 is about 4 cm.
    [0018] With this particular choice of values for the transverse dimensions of the different tracks and their mutual spacing, the ground feeding system 10 has a total width of about 54 cm. This total width is chosen to remain smaller than the center distance of the smallest non-guided electric vehicle likely to circulate on the roadway 2 and to use the system 10.
    [0019] As shown in Figure 3, to facilitate the introduction of the system 10, it comprises a support assembly of the different tracks. The support assembly comprises a base 20 having a main portion 21, substantially flat, an intermediate portion 22, shaped "S", and a substantially planar side portion 23.
    [0020] The main portion 21 carries two support profiles 25 and 26, identical to each other, and intended to serve as insulating support respectively to the phase conductive track 11 and the neutral conducting track 12. The tracks are mechanically fixed to the profiles of supports, but are electrically insulated from them. The support profiles 25 and 26 are mechanically and electrically connected to the base 20. The lateral portion 23 of the base 20 carries the profile 14.
    [0021] A difference in level between the main portion 21 and the lateral portion 23 is adjusted by means of the intermediate portion 22 so that the upper surface of the profile 14, defining the protective track 13, is at the same level as the upper surfaces of the phase tracks 11 and 12. This level is intended to be located slightly above the surface 8 of the roadway 2. An electric cable 28, fixed to the web of the profile 14, is intended to be buried in the roadway 2, advantageously to- beyond the trench 6, so as to put the protective track 13 to the earth potential Vterre, and electrical continuity the support assembly. The base 20 is provided with a plurality of drawers 29, adjustable in height, adapted to be stuck in the bottom of the trench 6 so as to preposition the feed system by the ground 10 so that the level of the tracks are flush with the surface 8 of the roadway 2 to achieve. Then, concrete is poured so as to drown the support assembly. The support profiles 25 and 26 as well as the profile 14 are then sealed in the concrete layer 7.
    [0022] Advantageously, the state of the upper surface of the concrete layer is worked to present an adhesion adapted to the tires of the vehicles traveling on the roadway 2. The pair of supply tracks, consisting of the phase track 11 and the track of neutral 12, and the protective track 13 are flush with the surface 8 of the roadway 2. More precisely, while the protective track 13 is substantially at the surface of the roadway, the neutral and phase tracks protrude slightly above the surface 8 of the carriageway 2, for example of a height of the order of a few millimeters, in particular equal to 2 mm. Thus, when the phase track 11 is brought to a high potential, any leakage of current, due for example to the presence of a puddle or a film of water on the surface 8 of the roadway, is collected on the first side by the neutral track 12 and on the second side by the protective track 13. This prevents the portion of the surface of the roadway brought to a high potential does not extend laterally beyond the width of the system. Underfloor feeding 10. By choosing the total width of the ground feeding system 10 less than the center distance of the smallest vehicle allowed to run on the roadway and able to use the system 10, it is ensured that if a pedestrian is located laterally on the first or second side of a segment of the phase 11 runway, but beyond either the neutral runway or the runway, the pedestrian shall not be electrocuted when this segment is carried high potential.
    [0023] Referring now to FIG. 4, each segment 11.i of the phase track 11 is electrically connected, via a controlled switch 30, to a source 35 of electrical power. The source 35 is clean for example to deliver a voltage V, 750 V DC. The source 35 is in fact a relay station capable of converting a three-phase current into a two-phase current. The controlled switches 30.i of the segments 11.i of the phase track 11 are actuated to switch in synchronization with the displacement of the car 1 along the road 2, so that the segment above which lies the car 1 and possibly the adjacent segments are connected to the source 35 to be brought to the potential of 750 V. The collection means 5 of the car 1 rubbing simultaneously on the tracks of 11 phase and neutral 12, allows the circulation of a power supply to the car's rechargeable battery 1 or its electric motor. The segments 11.i are fed successively, so that a segment or possibly two segments are at the potential of 750 V at a given instant. Thus, the portion of the surface of the roadway carried to a potential, dangerous for a pedestrian, does not extend longitudinally beyond the length of one segment or two segments at most. For this reason, the length of the segments is chosen to correspond substantially to the braking distance of a passenger car traveling at 60 km / h.20
    权利要求:
    Claims (12)
    [0001]
    CLAIMS1.- Underground power supply system (10) for unguided electric vehicles (1), of the conduction type, characterized in that it comprises: a pair of supply tracks, comprising a conductive track called phase (11), intended to be electrically connected to a voltage source (Vs), and a so-called neutral conducting track (12), for the return of the current, intended to be electrically connected to a reference potential (Vref), the neutral track flowing parallel to the phase track on a first side thereof; and, a protective conductive track (13), intended to be connected to a ground potential (Vterre), the protective track circulating parallel to the phase track (11) on a second side thereof, opposite to the first side, said system being intended to be implanted in a roadway so that the conductive tracks of phase, neutral and protection are flush with a surface (18) of the roadway (2).
    [0002]
    2.- System according to claim 1, characterized in that the protective conductive track (13) is electrically connected to a wire intended to be buried in the roadway (2), so as to put said protective conductive track to the potential of Earth.
    [0003]
    3.- System according to any one of claims 1 and 2, characterized in that the phase conductive track (11) consists of a plurality of segments (11.i) oblong, arranged end to end and electrically isolated the each other.
    [0004]
    4. A system according to claim 3, characterized in that each segment (11.i) is electrically connected to a power source (35) by a controlled switch (30.i).
    [0005]
    5.- System according to any one of claims 1 to 4, characterized in that the protective conductive track (13) consists of an upper surface of a profile (14) sealed in the roadway (2).
    [0006]
    6. System according to any one of claims 1 to 5, characterized in that the conductive neutral track (12) is constituted by a plurality of segments (12.i) oblong, arranged end to end, and electrically connected to reference potential (Vref) -
    [0007]
    7. System according to any one of claims 1 to 6, characterized in that the phase conductor tracks (11), neutral (12) and protection (13) are carried on a support assembly, intended to be drowned under the surface (8) of the roadway (2).
    [0008]
    8. System according to any one of claims 1 to 7, characterized in that the protective conductive track (13) is at a distance from the conductive phase track (11) between 5 and 50 cm, preferably between 10 and 10 cm. and 30 cm, in particular equal to 15 cm.
    [0009]
    9. System according to any one of claims 1 to 8, characterized in that the width of the protective conductive track (13) is between 1 and 20 cm, preferably between 2.5 and 15 cm, in particular equal to 4 cm.
    [0010]
    10.- System according to any one of claims 1 to 9, characterized in that the protective conductive track (13) is at the surface (8) of the roadway (2).
    [0011]
    11. System according to any one of claims 1 to 10, characterized in that the conductive phase track (11) and neutral (12) is between 0 and 5mm above the level of the surface (8) of the roadway (2), in particular 2mm above the surface of the roadway.
    [0012]
    12.- System according to any one of claims 1 to 11, characterized in that it is intended to power an unguided electric vehicle (1) equipped with a means of captation (5) clean current, during the moving the vehicle on the roadway (2), to be brought into sliding contact on the two phase (11) and neutral (12) conducting tracks simultaneously.30
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    法律状态:
    2015-03-19| PLFP| Fee payment|Year of fee payment: 2 |
    2016-03-21| PLFP| Fee payment|Year of fee payment: 3 |
    2017-03-22| PLFP| Fee payment|Year of fee payment: 4 |
    2018-02-02| CA| Change of address|Effective date: 20180103 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1452527A|FR3019113B1|2014-03-25|2014-03-25|GROUND FEED SYSTEM FOR NON-GUIDE ELECTRIC VEHICLES|FR1452527A| FR3019113B1|2014-03-25|2014-03-25|GROUND FEED SYSTEM FOR NON-GUIDE ELECTRIC VEHICLES|
    EP15158346.5A| EP2923882B1|2014-03-25|2015-03-10|System for supplying power via the ground for free-wheeled electric vehicles|
    ES15158346.5T| ES2629869T3|2014-03-25|2015-03-10|Ground feeding system for unguided electric vehicles|
    CA2885397A| CA2885397A1|2014-03-25|2015-03-13|Power supply system for unguided electric vehicles through the ground|
    CN201510125152.9A| CN104943565B|2014-03-25|2015-03-20|Ground power supply system for non-guiding vehicle|
    RU2015110512A| RU2683213C2|2014-03-25|2015-03-24|Ground level power supply system for unguided vehicle|
    BR102015006567A| BR102015006567A8|2014-03-25|2015-03-24|ground level power supply system|
    US14/667,838| US9868365B2|2014-03-25|2015-03-25|Ground level power supply system for a non-guided vehicle|
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