JP4774066B2 - Charging system - Google Patents

Description

  The present invention particularly relates to a charging system and a charging method for an overhead wire-less traffic system in which a storage battery is mounted on a vehicle, receives power from a charging facility installed on the ground, and travels on a set route such as on a track or on a road surface. About.

In recent years, in a new traffic system in which a vehicle travels on a set route such as on a track or on a road surface, an overhead wire-less traffic system using an electric vehicle that travels without receiving power from the overhead wire has been proposed. Therefore, a storage battery is mounted on such an electric vehicle.
Such an overhead line-less traffic system is disclosed in, for example, Japanese Patent Application Laid-Open No. 2005-269687.

  As shown in FIG. 5, the non-contact charging device for a vehicle disclosed in Patent Document 1 includes a primary coil 53 connected to an external power source and a secondary coil 54 connected to a power battery 52 of the vehicle 51. Is a non-contact type charging device for charging the power battery 52, and the primary coil 53 is installed on a position substantially flush with the road surface R on which the vehicle 51 travels and where the vehicle 51 does not travel. At the same time, the primary coil 53 is configured to protrude below the secondary coil 54 provided on the floor bottom surface 51 a of the vehicle 51.

  As shown in FIG. 5, a rectifier 55, an RBCI (Remote Battery Charge Interface) 56, and an infrared communication transmitter / receiver 57 are connected in series to the secondary coil 54, and the RBCI 56 has a BMS ( A battery management system) 58 is connected. On the other hand, the non-contact charging high-frequency power supply device 61 is installed on the charging stand 62 side. The power supply device 61 is provided with a CPU 63, and receives and transmits a high frequency signal between the infrared communication transmitter / receiver 64 on the charging stand 62 side and the infrared communication transmitter / receiver 57 on the vehicle 51 side according to an instruction from the CPU 63. The control device 65 controls the actuator 66, that is, the motor for raising and lowering the primary coil 53. Further, C1 and C2 in FIG. 5 are relay contacts, respectively.

JP 2005-269687 A

  However, in the conventional non-contact charging device for a vehicle as shown in FIG. 5, the feeding mechanism for pushing the primary coil 53 toward the secondary coil 54 and the secondary coil 54 are approached or approached. Since the elevating mechanism for separating is provided, the drive mechanism of the primary coil 53 becomes complicated, resulting in high costs and a long operating time of the drive mechanism. For example, APM (Automated People Mover), which is a new rubber tire type transportation system, needs to be charged quickly while the station is stopped for several tens of seconds. There is a possibility that the battery will be scraped and cannot be fully charged.

  Moreover, since the primary coil 53 and the secondary coil 54 of the conventional charging device are large in size and arranged in the horizontal direction, they cannot be accommodated in a narrow location, and the installation location is limited. Has the problem. Moreover, in the primary coil 53 and the secondary coil 54, the gap between the two coils cannot be set large due to the principle of non-contact power transmission (for example, a gap of about several tens to 200 mm). When moving up and down based on the above, both coils may come into contact with each other.

  The present invention has been made in view of such a situation, and an object of the present invention is to use a power transmission device and a power reception device having large dimensions and to eliminate or simplify a drive mechanism of the power transmission device. It is possible to secure a sufficient charging time, avoid contact between the power transmission device and the power reception device due to vertical movement of the vehicle, install the ground side power transmission device without interfering with peripheral devices, and receive power on the vehicle side. An object of the present invention is to provide a charging system and a charging method capable of installing a device by effectively using a dead space.

In order to solve the above-described problems of the prior art, the present invention provides a charging system for a traffic system in which a vehicle equipped with a storage battery receives power supplied from a charging facility installed on the ground and travels on a preset route. in the the charging facility provided with a plurality of power transmitting device, the sending device, provided with fixed vertically on a side surface disposed before and after the position of the station yard of the platform, and faces the traveling road surface Rutotomoni The power receiving device is fixed in a vertically-positioned manner downward from the lower part of the side surface of the vehicle body of the vehicle at each of a front position and a rear position with respect to the wheel of the vehicle, and the power transmitting device and the power receiving device are connected to each other. by disposed opposite charge of the storage battery is configured to divide the line.

Specifically, in the present invention, the following configuration is preferable.
(1) The power receiving device is provided on both the left and right sides of the vehicle.
(2) A power reception device is further provided in the front and rear intermediate portion of the vehicle, and a power transmission device is provided at the position of the front and rear intermediate portion of the platform in the station corresponding to the power reception device in the front and rear intermediate portion of the vehicle. Is further provided.

As described above, the charging system according to the present invention is applied to a transportation system in which a vehicle equipped with a storage battery is supplied with electric power from a charging facility installed on the ground and travels on a preset route. a plurality of power transmission device is provided in, the sending device is placed before and after the position of the station yard platform and provided fixed to the upright on the side facing the road surface side Rutotomoni, the wheels of the vehicle In each of the front position and the rear position, the power receiving device is vertically fixed from the lower part of the side surface of the vehicle body of the vehicle, and the power transmitting device and the power receiving device are arranged to face each other. by, the charging of the storage battery is configured to divide the line, it is possible to use a power transmitting device and a power receiving device of large dimensions, perform rapid charging in a short time Door can be. Further, in the charging system of the present invention, a drive mechanism for the power transmission device is not necessary, so that a sufficient charging time can be ensured at a low cost. Therefore, the charging system of the present invention is excellent in application to a traffic system such as APM.
Furthermore, in the charging system of the present invention, even when the vehicle moves up and down based on a load fluctuation or the like, the power transmission device and the power receiving device do not contact each other. Thus, it is not necessary to set a gap dimension between the power transmission device and the power reception device, and damage to the power transmission device and the power reception device can be prevented. In addition, the ground-side power transmission device can be installed without interfering with peripheral devices such as signal lines and guide mechanisms, and the degree of freedom in layout can be improved.

Further, in the present invention, the power receiving device is provided on both left and right sides of the vehicle, or a power receiving device is further provided in the front and rear intermediate portion of the vehicle, and is located at the position of the front and rear intermediate portion of the platform in the station building. Since a power transmission device is further provided corresponding to the power reception device in the front and rear intermediate portion of the vehicle, it is possible to install the power reception device on the vehicle side in a space of a large space, dead space. The power transmission device and the power reception device with larger dimensions can be used.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[First embodiment]
FIG. 1 is a schematic front view of a charging system according to a first embodiment of the present invention applied to an overhead line-less traffic system.
A vehicle 1 shown in FIG. 1 is applied to a track-based transportation system without an overhead wire, and includes rubber tires 2 as wheels at four locations on the front, rear, left, and right of the lower part of a vehicle body, and a traveling road surface of a predetermined track route. 20 is an electric vehicle that travels with electric power. For this reason, the vehicle 1 includes a drive motor (not shown) that drives the rubber tire 2, a storage battery (for example, a lithium ion secondary battery) 3 that sends a drive current to the drive motor, and a controller (not shown) that controls the drive motor. And an in-vehicle power receiving device (secondary coil) 4, and an electromotive force generated in the power receiving device 4 is converted into direct current by a rectifier (not shown) and stored in the storage battery 3. .

  In addition, the vehicle 1 includes a vehicle-mounted control device 5 that controls the travel of the vehicle and other vehicles, and a vehicle-mounted communication device that exchanges information with the ground side by communicating with a ground communication device described later using infrared rays or the like. 6 and a position sensor (not shown) for detecting the position of the vehicle. When the position of the traveling vehicle 1 is detected by the position sensor, the vehicle-mounted control device 5 moves the vehicle 1 to a predetermined position. It is configured to perform control such that it is stopped at.

  The in-vehicle power receiving device 4 according to the first embodiment of the present invention is fixedly provided on one side surface of the front and rear portions of the vehicle 1 facing the platform side described later. That is, the power receiving device 4 is configured by using a core and a winding (not shown), and is formed in a plate shape such as a circle or a quadrangle in a side view. 1 is provided vertically from the lower part of the side surface of the vehicle body. Such a vertical arrangement of the power receiving device 4 makes it possible to use a relatively large empty space in the front and rear portions of the vehicle 1, and the length L of the vertical size and the front and rear dimensions of the power receiving device 4 are made larger than before ( (For example, 900 mm or more).

On the other hand, a ground charging facility 10 is installed in a station yard which is a ground charging place. The ground charging facility 10 includes a charging power source 11, a ground charging control device 12, a ground communication device 13 for exchanging information with the in-vehicle communication device 6, and a plurality (two in this embodiment) of ground power transmission devices ( Primary coil) 14 is provided.
The ground power transmission device 14 of the present embodiment has substantially the same configuration, shape, and size as the in-vehicle power receiving device 4, is disposed at the front and rear positions of the platform 15 in the station premises, and is a side surface facing the traveling road surface 20 side. Are fixed vertically. When the vehicle 1 stops at a predetermined position in the station, the in-vehicle power receiving device 4 and the ground power transmitting device 14 are confronted with a certain gap (gap). The ground power transmission device 14 and the charging power source 11 are connected to each other via a power supply line 17 via a switch 16. A home door 18 is installed on the traveling road surface 20 side on the platform 15.

  Further, a guide groove 21 extending along the traveling direction of the vehicle 1 is provided at the center in the width direction of the traveling road surface 20, and a guide wheel 22 is suspended from the vehicle body bottom surface of the vehicle 1. . For this reason, the vehicle 1 travels on the preset traveling road surface 20 while being guided by the engaging action of the guide wheel 22 and the guide groove 21 in a state where the guide wheel 22 is inserted and disposed in the guide groove 21. It is supposed to be. Alternatively, in a vehicle that is steered by an on-board actuator, 22 is not a guide wheel but serves as a backup for safety. A signal line 23 for transmitting various signals from the ground side is installed on the traveling road surface 20.

In the charging system according to the first embodiment of the present invention configured as described above, the vehicle 1 stops at a predetermined position in the station premises, and the in-vehicle power receiving device 4 and the ground power transmitting device 14 face each other in a non-contact state. Are arranged, the high frequency current of alternating current is supplied from the charging power source 11 of the ground charging facility 10 to the ground power transmission device 14. Along with this, a high-frequency electromagnetic field is generated in the ground power transmission device 14, the electromagnetic field of the ground power transmission device 14 is received by electromagnetic induction in the in-vehicle power receiving device 4, and an induced electromotive force is generated in the in-vehicle power receiving device 4, AC current flows. The generated electromotive force is converted into DC power by a rectifier (not shown), transmitted to the storage battery 3 and stored, whereby charging is performed.
Then, after the start of charging, in the on-vehicle charging control device (not shown), the charging voltage of the storage battery 3 is compared with a preset value of the charging end voltage, and the voltage of the storage battery 3 reaches the setting voltage, or a predetermined charging time When the time elapses, a charging end command is transmitted to the ground charging control device 12 via the in-vehicle communication device 6, and energization of the vehicle 1 by the charging power source 11 is stopped. Next, a vehicle start permission command is transmitted from the ground charge control device 12 to the vehicle-mounted control device 5 via the vehicle-mounted charge control device (not shown), and the vehicle-mounted control device 5 starts the vehicle 1.

  As described above, according to the charging system of the first embodiment of the present invention, the two ground power transmission devices 14 constituting the ground charging facility 10 are placed vertically on the side facing the traveling road surface 20 at the front and rear positions of the platform 15 in the station premises. And the vehicle-mounted power receiving device 4 is vertically fixed on the one side surface of the front and rear portions of the vehicle 1. The ground power transmission device 14 and the vehicle-mounted power receiving device 4 are opposed to each other to charge the storage battery 3. Therefore, the ground power transmission device 14 and the in-vehicle power receiving device 4 that are larger in size than conventional ones can be used, and quick charging can be performed in a short time.

Moreover, according to the charging system of this embodiment, since the ground power transmission apparatus 14 is a fixed type and a drive mechanism becomes unnecessary, it is possible to reduce the cost by simplifying the system and reduce the operation time during charging. It can be shortened and a long charging time can be taken.
Furthermore, according to the charging system of the present embodiment, even when the vehicle 1 moves up and down based on a load variation or the like, the ground power transmission device 14 and the in-vehicle power receiving device 4 maintain a certain gap and come into contact with each other. Therefore, the complicated work of setting the gap dimension between the ground power transmission device 14 and the in-vehicle power receiving device 4 assuming the load change of the vehicle 1 is not required, and the ground power transmitting device 14 and the in-vehicle power receiving device 4 are damaged. Can be prevented and durability can be improved. Moreover, the ground power transmission device 14 can be easily installed without interfering with the signal line 23 and the guide mechanisms 21 and 22, and the degree of layout freedom can be increased.

[Second Embodiment]
2 and 3 are schematic views of a charging system according to a second embodiment of the present invention applied to an overhead line-less traffic system.
In the second embodiment, unlike the first embodiment, the in-vehicle power receiving device 4 is provided vertically on both the left and right side surfaces of the front and rear parts of the vehicle 1, and correspondingly, the ground power transmitting device 14 is provided. Are provided on the left and right sides of the front and rear positions of the platform 15 in the station premises and fixed vertically on the side facing the traveling road surface 20 respectively. Other configurations are the same as those of the first embodiment, and the same members are denoted by the same reference numerals.
According to the charging system of the second embodiment, since the in-vehicle power receiving device 4 and the ground power transmitting device 14 are installed twice as many as the first embodiment, rapid charging can be performed in a shorter time. it can. Therefore, it is possible to sufficiently cope with a traffic system having a time zone where the stop time at the station is short.

  While the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications and changes can be made based on the technical idea of the present invention.

  For example, in addition to the first embodiment and the second embodiment, as shown by a chain line in FIG. 3, the in-vehicle power receiving device 4 is provided on one side or both left and right sides of the front and rear intermediate portion of the vehicle 1, and the ground power transmission corresponding to this The device 14 may be provided on the side of the platform 15. As a result, the in-vehicle power receiving device 4 can be installed in a large vacant space of the vehicle 1, the dead space of the vehicle 1 can be effectively used, and quick charging can be performed in an even shorter time. Can do.

1 is a schematic front view showing a charging system according to a first embodiment of the present invention. FIG. 2 shows a charging system according to a second embodiment of the present invention, wherein (a) is a schematic plan view of the vehicle, (b) is a schematic side view of the vehicle, and (c) is a schematic front view of the vehicle. The charging system which concerns on 2nd Embodiment of this invention is shown in more detail, (a) is a schematic plan view of a vehicle, (b) is a schematic side view of a vehicle. It is a schematic block diagram which shows the conventional non-contact charging device for vehicles.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Electric vehicle 2 Rubber tire 3 Storage battery 4 In-vehicle power receiving apparatus 10 Ground charging equipment 14 Ground power transmitting apparatus 15 Platform 20 Traveling road surface 24 Opening 25 Cover

Claims (3)

Vehicle equipped with a storage battery receives power supply from the installed charging facility on the ground, in the charging system of the transportation system running a preset path, a plurality of power transmission device is provided in the charging facility, the power transmission device is arranged in front and rear positions of the station yard platform and road surface is fixed to the vertically provided on a side surface facing the side Rutotomoni, in each of the forward position and rearward position than the wheels of the vehicle, the power receiving device is provided fixed to the vertically downward from the lower portion of the vehicle body side of said vehicle, said by the power transmitting device the receiving device and a are opposed to each other and be placed, so that the charging of the battery may break line It is comprised in the charging system characterized by the above-mentioned.   The charging system according to claim 1, wherein the power receiving device is provided on both left and right sides of the vehicle. A power receiving device is further provided at the front and rear intermediate portion of the vehicle, and a power transmission device is further provided at the position of the front and rear intermediate portion of the platform in the station corresponding to the power receiving device at the front and rear intermediate portion of the vehicle. The charging system according to claim 1 or 2, wherein the charging system is provided.

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