JP2020054081A - Power supply system for electric vehicle - Google Patents

Abstract

To provide a power supply system for an electric vehicle in which, even if a current collecting member such as a slide plate is displaced from a predetermined position while an electric vehicle travels, the power supply from a power supply line to the electric vehicle is not interrupted, which is realized in a simple manner so as to reduce costs.SOLUTION: A first power supply line 3 and a second power supply line 4 arranged above a road surface are arranged at a distance d apart in the vehicle width direction of an electric vehicle 1. The second power supply line is present at lower position rather than that of the first power supply line. In a first pantograph 5 and a second pantograph 6 provided on a roof of the electric vehicle 1, the length of a first slide plate 51 which is capable of sliding on the first power supply line from lower side and has a longitudinal shape in the vehicle width direction of the electric vehicle and the length of a second slide plate 61 which is capable of sliding on the second power supply line from lower side and has a longitudinal shape in the vehicle width direction of the electric vehicle are over twice length of a gap between the first power supply line and the second power supply line.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a power supply system for an electric vehicle that supplies power to an electric vehicle traveling on a trackless road surface between a first and a second pair of power supply lines so that current flows to an electric motor mounted on the electric vehicle.

  Conventionally, a power supply system of this type has a two-pole power supply line for supplying power so that a positive or negative two-pole DC current or a single-phase AC current flows to an electric motor mounted on an electric vehicle, and is capable of slidingly contacting both power supply lines. And two current collectors such as a pantograph provided in the electric vehicle. As an example, a power supply system for an electrically driven dump truck (electric vehicle) described in Patent Literature 1 below includes two trolley wires (a first and a second pair of power supplies), one of which is a high voltage and the other is connected to the ground. Lines), two current collectors (current collectors) each provided with a sliding plate capable of slidingly contacting each power supply line from below, and a power supply line detection device such as a camera that detects the power supply line from below while traveling. A control device that applies a yaw moment to the electric vehicle so that the electric vehicle follows the power supply line and travels based on information detected by the power supply line detection device.

  The above power supply system suppresses the center position of the slide plate from largely deviating in the vehicle width direction from the power supply line during traveling of the electric vehicle by applying the yaw moment by the control device based on the information detected by the power supply line detection device. Power supply to the electric vehicle can be maintained. However, for that purpose, in the power supply system, it is necessary to provide a power supply line detection device that detects a power supply line and a control device that controls a yaw moment applied to the electric vehicle in the electric vehicle, and the control device executes the control device. There is also a problem that the control for following the power supply line is complicated, and there is a problem that the cost of the power supply system is high.

JP 2012-244708 A

  The present invention has been made in view of the above points, even if a current collecting member such as a slide plate may be displaced from a predetermined position while the electric vehicle is running, the power supply from the power supply line to the electric vehicle is not interrupted, It is another object of the present invention to provide a power supply system for an electric vehicle that can easily realize this and reduce costs.

  In order to solve the above-mentioned problems, a first invention of the present application is directed to an electric motor mounted on an electric vehicle running on a trackless road surface, between the first and second pair of power supply lines installed above the road surface. A power supply system for an electric vehicle that supplies power so that a current flows through the first power supply line, the first power supply line supporting a first sliding plate that is slidable from below and that is long in the vehicle width direction of the electric vehicle. A first pantograph provided on the roof of the electric vehicle, and a first pantograph provided on the roof of the electric vehicle, the first pantograph being slidable in contact with the second power supply line from below, and extending in the vehicle width direction of the electric vehicle. A second pantograph provided on a roof of the electric vehicle, the second power supply line including a second power supply line and a second power supply line; The power supply line is spaced apart from the power supply line in the vehicle width direction, and The line is located at a position lower than the first power supply line, and the length of the first and second sliders is longer than twice the distance between the first and second power supply lines. And

  According to the first invention, the first and second pair of power supply lines provided above the road surface are arranged apart from each other in the vehicle width direction of the electric vehicle, and the second power supply line is lower than the first power supply line. And the length of the first slider that slides in contact with the first power supply line from below and the length of the second slider that slides in contact with the second power supply line from below are determined by the first power supply line and the second power supply line. Is longer than twice the distance between the two power supply lines, even if one or both of the first and second sliders may be displaced from a predetermined position while the electric vehicle is running. Power supply is not interrupted. Therefore, maintenance of power supply to the electric vehicle can be easily realized, and the cost of the power supply system can be reduced.

  In the first aspect of the invention, the first sliding plate is provided at one position from the center in the longitudinal direction to one end on the side of the second power supply line, from the direction crossing the vehicle width direction to the vehicle width direction. Can be bent freely within the range, and the first sliding plate extends from the direction crossing the vehicle width direction of the electric vehicle in the vehicle width direction so as not to contact the second power supply line when the first framework bends and stretches. It is desirable to bend within the range until they match. Alternatively, the first sliding plate is pivotable about a vertical pivot axis located at the center in the longitudinal direction, and the first sliding plate does not contact the second power supply line when the first framework bends and stretches. Thus, it is desirable to turn in a direction crossing the vehicle width direction of the electric vehicle. According to this, even when the second power supply line is at a position lower than the first power supply line, when the first pantograph bends and stretches, the first sliding plate crosses the vehicle from the direction crossing the vehicle width direction of the electric vehicle. The first sliding plate does not come into contact with the second power supply line because it bends within a range until it coincides with the width direction or turns in a direction crossing the width direction of the electric vehicle. Breakage and breakage of the power supply line can be prevented.

  A second invention of the present application is a power supply system for an electric vehicle that supplies power to an electric vehicle traveling on a trackless road surface such that current flows to an electric motor mounted on the electric vehicle between a first and a second pair of power supply lines. There is provided a first sliding plate which is slidable from below on a first power supply line installed above a road surface and which is longitudinal in the vehicle width direction of the electric vehicle, and which supports the first sliding plate and is capable of bending and extending in the vertical direction. A first pantograph provided on the roof of the electric vehicle, the first pantograph having a first framework, and a second power supply line erected at a position above one side of the road surface and lower than the first power supply line. A second sliding plate which is slidable from above and which is vertically elongated, and a second framework which supports the second sliding plate and is capable of bending and extending in the vehicle width direction of the electric vehicle, and is opposed to the second power supply line. A second pantograph provided on a side surface of the electric vehicle, and a length of the first sliding plate. The bending range of the second framework is equal to or longer than a predetermined first variation distance in which the traveling electric vehicle fluctuates in the vehicle width direction, and the length of the second sliding plate fluctuates in the vertical direction. A predetermined second variable distance or more.

  According to the second aspect, the second pantograph is provided on the side of the electric vehicle facing the second power supply line, which is located above one side of the road surface and lower than the first power supply line. The second sliding plate can slide on the second power supply line from the side, and the length of the first sliding plate of the first pantograph and the bending range of the second frame of the second pantograph supporting the second sliding plate are determined by the running distance. When the middle electric vehicle is longer than a predetermined first fluctuation distance that fluctuates in the vehicle width direction, and the length of the second sliding plate is longer than a predetermined second fluctuation distance that the moving electric vehicle fluctuates in the vertical direction. Therefore, even if one or both of the first and second sliders may be displaced from a predetermined position during traveling of the electric vehicle, the power supply from the first and second power supply lines is not performed. There is no interruption. Therefore, maintenance of power supply to the electric vehicle can be easily realized, and the cost of the power supply system can be reduced.

  A third invention of the present application is a power supply system for an electric vehicle that supplies electric power to an electric vehicle running on a trackless road surface so that current flows to an electric motor mounted on the electric vehicle between a first and a second pair of power supply lines. There is provided a first sliding plate which is slidable from below on a first power supply line installed above a road surface and which is longitudinal in the vehicle width direction of the electric vehicle, and which supports the first sliding plate and is capable of bending and extending in the vertical direction. A first pantograph provided on the roof of the electric vehicle and a second power supply line laid below the road surface, the first pantograph being slidable from above, and having a longitudinal direction in the vehicle width direction of the electric vehicle. A current collecting member, a second frame supporting the current collecting member and vertically bending and extending, and a current collector provided under the floor of the electric vehicle and the current collector in a width direction of the electric vehicle. A movable mechanism provided on the floor of the electric vehicle, the first sliding plate being slidable; The length and the movable range of the current collector by the movable mechanism are equal to or longer than a predetermined first variable distance in which the traveling electric vehicle varies in the vehicle width direction, and the bending range of the second framework is the traveling electric vehicle. Is greater than or equal to a predetermined second variation distance that varies in the vertical direction.

  According to the third aspect, the length of the first contact plate of the first pantograph slidably in contact with the first power supply line from below, and the slidable contact from above with the second power supply line laid on the road surface or below it. The range of sliding of the current collecting member by the movable mechanism is equal to or longer than a predetermined first variable distance in which the traveling electric vehicle fluctuates in the vehicle width direction, and the second framework of the current collector provided under the floor of the electric vehicle Is greater than or equal to a predetermined second fluctuation distance in which the traveling electric vehicle fluctuates in the vertical direction, so that either or both of the first slider and the current collecting member move to a predetermined position during traveling of the electric vehicle. Even if the position is shifted from the power supply, the power supply from the first power supply line and the second power supply line is not interrupted. Therefore, maintenance of power supply to the electric vehicle can be easily realized, and the cost of the power supply system can be reduced.

  In the third aspect of the invention, the current collector is a second slider, the current collector is a second pantograph, or the current collector is a conductive roller, and the roller is disposed in a vehicle width direction of the electric vehicle. Desirably, it is rotatable about a rotation axis and is longitudinal in the vehicle width direction of the electric vehicle. According to this, the structure of the current collector can be simplified, and the cost reduction of the power supply system can be further promoted.

BRIEF DESCRIPTION OF THE DRAWINGS The principal part perspective view which shows roughly one Embodiment of the electric power feeding system of the electric vehicle of this application 1st invention. FIG. 2 is a front view showing the power supply system of the electric vehicle shown in FIG. 1 from the rear side in the traveling direction of the electric vehicle. The perspective view of the principal part which shows the more specific embodiment of the electric power feeding system of the electric vehicle shown in FIG. The perspective view of the principal part which shows the more specific embodiment of the electric power feeding system of the electric vehicle shown in FIG. 1 different from the embodiment shown in FIG. The principal part perspective view which shows roughly one Embodiment of the electric power feeding system of the electric vehicle of this application 2nd invention. The principal part perspective view which shows roughly one Embodiment of the electric power feeding system of the electric vehicle of this application 3rd invention. The principal part perspective view which shows roughly another Embodiment of the electric power feeding system of the electric vehicle of this application 3rd invention.

  An embodiment of the power supply system for an electric vehicle according to the first invention of the present application will be described with reference to FIGS. 1 and 2. Note that the electric vehicle 1 is a truck having four or more wheels 2 in total, and only the driver's seat side is illustrated without the loading platform portion.

  The electric vehicle 1 is equipped with an electric motor (not shown), and the torque when the electric motor rotates is transmitted to the wheels 2 so that the electric vehicle 1 travels on a trackless road surface. The power supply to the electric vehicle 1 is performed between the first power supply line 3 and the second power supply line 4 provided as a pair above the road surface, and a current flows to the electric motor by the power supply. In the present embodiment, the first power supply line 3 and the second power supply line 4 are a positive electrode and a negative electrode, respectively, and a DC current flows through the electric motor. Further, the first power supply line 3 and the second power supply line 4 are arranged apart from each other in the vehicle width direction of the electric vehicle 1, and the second power supply line 4 is located at a position lower than the first power supply line 3.

  A first pantograph 5 and a second pantograph 6 are provided on the roof of the electric vehicle 1. The first pantograph 5 and the second pantograph 6 are both so-called single-arm pantographs. The first pantograph 5 supports a first sliding plate 51, which is slidable in contact with the first power supply line 3 from below, and is long in the vehicle width direction of the electric vehicle 1, and supports the first sliding plate 51, and is capable of bending and extending vertically. And a first frame 52. The first frame set 52 includes an upper frame 52a and a lower frame 52b, and a lower end of the upper frame 52a and an upper end of the lower frame 52b are flexibly connected by a hinge. The upper frame 52a supports the first sliding plate 51 at its center. In general, the first frame 52 has a first balance link (not shown) for keeping the posture of the first slider 51 constant and a second balance for rocking the upper frame 52a in conjunction with the rocking of the lower frame 52b. A balance link (not shown) is provided.

  Similarly to the first pantograph 5, the second pantograph 6 also includes a second sliding plate 61 and a second sliding plate 61 which can slide on the second power supply line 4 from below and are long in the vehicle width direction of the electric vehicle 1. And a second frame 62 that supports and bends vertically. Further, the second frame set 62 includes an upper frame 62a and a lower frame 62b, and a lower end of the upper frame 62a and an upper end of the lower frame 62b are flexibly connected by hinges. The upper frame 62a supports the second sliding plate 61 at its center. Similarly to the first frame 52, the second frame 62 has a first balance link (not shown) for keeping the posture of the second contact plate 61 constant, and the upper frame 62a interlocked with the swing of the lower frame 62b. And a second balance link (not shown) for swinging is provided.

In such a first pantograph 5 and a second pantograph 6, the lengths l ₁ and l ₂ of the first sliding plate 51 and the second sliding plate 61 are defined by the distance between the first power supply line 3 and the second power supply line 4. It is longer than twice the interval d. By doing so, even if one or both of the first contact plate 51 and the second contact plate 52 may be displaced from a predetermined position while the electric vehicle 1 is traveling, the first power supply line 3 and the second contact plate 52 Power supply from the power supply line 4 is not interrupted. Therefore, the maintenance of power supply to the electric vehicle 1 can be easily realized, and the cost of the power supply system can be reduced.

  Next, a more specific example of the power supply system of the electric vehicle 1 shown in FIGS. 1 and 2 will be described with reference to FIGS. Referring to FIG. 3, in the power supply system of electric powered vehicle 1, first grounding plate 51 extends in the width direction of electric powered vehicle 1 so as not to contact second power supply line 4 when first framework 52 bends and stretches. On the other hand, it is freely bendable in a range from the direction of intersection to the position in the vehicle width direction. Specifically, the first sliding plate 51 supported at the center in the length direction by the upper end portion of the upper frame 52a of the first frame 52 is provided at one position from the center in the length direction to the second power supply line 4. A portion from the rotating shaft 53 to one end on the side of the second power supply line 4 is a bent portion 51 a. The bent portion 51 a of the first sliding plate 51 is The center of the electric vehicle 1 can be bent within a range from a direction crossing the vehicle width direction to a position corresponding to the vehicle width direction. Here, the turning angle of the bent portion 51a can be set up to 180 ° forward and backward in the vehicle length direction, respectively, based on the state in which the first sliding plate 51 is in sliding contact with the first power supply line 3.

  In the power supply system of the electric vehicle 1 shown in FIG. 3, when the power is supplied between the first power supply line 3 and the second power supply line 4 and the power supply is stopped, the first pantograph 5 and the second pantograph 6 can bend and stretch as follows. In supplying electric power to the electric vehicle 1, first, before extending the first frame 52 upward, the bent portion 51 a about the rotation shaft 53 is moved from the direction crossing the vehicle width direction of the electric vehicle 1 in the vehicle width direction. The first sliding plate 51 is bent by being rotated within a range until it coincides with the direction. The turning angle of the bent portion 51a at this time can be, for example, 90 °. In this case, the bent portion 51a coincides with the vehicle length direction of the electric vehicle 1. Next, the first pantograph 5 is raised by extending the first frame 52 upward with the first sliding plate 51 kept in this state. Then, when the first sliding plate 51 exceeds the second power supply line 4, the bent portion 51 a is bent in a direction opposite to the previous bending to return to the original state, and the first sliding plate 51 Stretch the whole line. Thereafter, the central portion of the first contact plate 51 is brought into contact with the first power supply line 3 from below. Then, the second frame 62 of the second pantograph 6 is extended upward, and the center of the second sliding plate 61 is brought into contact with the second power supply line 4 from below. Thus, the DC current flows through the electric motor mounted on the electric vehicle 1, and the electric vehicle 1 can run.

  When stopping the power supply to the electric vehicle 1, first, the second framework 62 of the second pantograph 6 is bent downward to lower the second pantograph 6. The power supply is stopped when the contact of the second sliding plate 61 with the second power supply line 4 is released. Next, the bent portion 51a of the first sliding plate 51 that is in contact with the first power supply line 3 coincides with the vehicle width direction from the direction crossing the vehicle width direction about the rotation shaft 53 as in the case of power supply. Rotate within the range up to. Thereafter, the first pantograph 5 is lowered by bending the first frame 52 with the first sliding plate 51 kept in this state. Then, when the first pantograph 5 reaches the lowest position, the bent portion 51a is bent in the direction opposite to the previous bending to return to the original state, and the entire first sliding plate 51 is extended in a straight line. .

  In this way, even when the second power supply line 4 is at a position lower than the first power supply line 3, when the first pantograph 5 bends and stretches, the first sliding plate 51 moves in the vehicle width direction of the electric vehicle 1. Is bent in the range from the direction intersecting to the vehicle width direction, the first grounding plate 51 does not contact the second power supply line 4, and the second power supply line 4 is not broken or damaged. Can be prevented. The timing of bending the first sliding plate 51 when the first pantograph 5 is extended and lowered can be arbitrarily set as long as it does not contact the second power supply line 4.

  Referring to FIG. 4, in the power supply system of electric powered vehicle 1, first sliding plate 51 is rotatable around vertical turning shaft 54 positioned at the center in the longitudinal direction, and first sliding plate 51 is When the first framework 52 bends and extends, the electric vehicle 1 turns in a direction intersecting the vehicle width direction so as not to contact the second power supply line 4. That is, the first sliding plate 51 supported at the center in the longitudinal direction by the upper end portion of the upper frame 52a of the first frame 52 has the pivot shaft 54 at the central portion in the longitudinal direction. The plate 51 is rotatable in a direction intersecting the vehicle width direction of the electric vehicle 1.

  In supplying power to the electric vehicle 1, first, the first sliding plate 51 is turned around the turning shaft 54 in a direction intersecting the vehicle width direction before the first frame 52 is extended upward. The turning angle at this time can be, for example, 90 °. In this case, the longitudinal direction of the first sliding plate 51 matches the vehicle length direction of the electric vehicle 1. Next, the first pantograph 5 is raised by extending the first frame 52 upward with the first sliding plate 51 kept in this state. Then, when the first contact plate 51 exceeds the second power supply line 4 upward, the electric vehicle 1 is turned around the turning shaft 54 so as to coincide with the width direction of the electric vehicle 1 to return to the initial state. Thereafter, the central portion of the first contact plate 51 is brought into contact with the first power supply line 3 from below. Then, the second frame 62 of the second pantograph 6 is extended upward, and the center of the second sliding plate 61 is brought into contact with the second power supply line 4 from below. Thus, the DC current flows through the electric motor mounted on the electric vehicle 1, and the electric vehicle 1 can run.

  When stopping the power supply to the electric vehicle 1, first, the second framework 62 of the second pantograph 6 is bent downward to lower the second pantograph 6. The power supply is stopped when the contact of the second sliding plate 61 with the second power supply line 4 is released. Next, the first frame 51 is bent to lower the first pantograph 5, and the contact between the first ground plate 51 and the first power supply line 3 is released. Thereafter, the first slider 51 is turned around the turning shaft 54 in a direction intersecting the vehicle width direction. Further, the first frame 52 is bent while the first sliding plate 51 is kept in this state, and the first pantograph 5 is lowered until the first sliding plate 51 is located below the second power supply line 4. Then, the first sliding plate 51 is turned around the turning shaft 54 until it coincides with the width direction of the electric vehicle 1 to return to the original state, and the first pantograph 5 is lowered to the initial position.

  In this way, even when the second power supply line 4 is at a position lower than the first power supply line 3, when the first pantograph 5 bends and stretches, the first sliding plate 51 moves in the vehicle width direction of the electric vehicle 1. , The first ground plate 51 does not contact the second power supply line 4, and breakage and breakage of the second power supply line 4 can be prevented. Note that the turning timing of the first sliding plate 51 when the first pantograph 5 is extended and lowered can be arbitrarily set as long as it does not contact the second power supply line 4.

  With reference to FIG. 5, one embodiment of a power supply system for an electric vehicle according to the second invention of the present application will be described. Note that the electric vehicle 1 is a truck having four or more wheels 2 in total, and only the driver's seat side is illustrated without the loading platform portion. In FIG. 5, the same portions as those of the first embodiment of the present invention shown in FIGS. 1 and 2 are denoted by the same reference numerals, and the description thereof will be omitted below.

  In the power supply system of the electric vehicle 1 illustrated in FIG. 5, the second power supply line 7, which is paired with the first power supply line 3 provided above the road surface, is located at a position above one side of the road surface and lower than the first power supply line 3. It is erected in existence. The second pantograph 8 is provided on the side of the electric vehicle 1 facing the second power supply line 7 in accordance with the installation position of the second power supply line 7. The second pantograph 8 supports a second sliding plate 81, which is slidable in contact with the second power supply line 7 from the side, and is vertically long, and bends and extends in the vehicle width direction of the electric vehicle 1. And a flexible second frame 82. The second frame set 82 includes a first frame 82a and a second frame 82b, and the first frame 82a and the second frame 82b are flexibly connected to each other by hinges at their adjacent ends. The first frame 82a supports the second sliding plate 81 at its center. As in the embodiment shown in FIGS. 1 and 2, the second frame 82 also includes a first balance link (not shown) for maintaining the posture of the second rubbing plate 81 constant, and a swing of the second frame 82b. A second balance link (not shown) for swinging the first frame 82a in association with the movement is generally provided.

In the power supply system of the electric vehicle 1 shown in FIG. 5, the length l ₁ of the first sliding plate 51 of the first pantograph 5 and the bending / stretching range r ₁ of the second framework 82 of the second pantograph 8 depend on the electric power during traveling. the vehicle 1 is the first variation distance or more predetermined varying in the vehicle width direction, and a length l ₃ of the second sliding plate 81 is predetermined second fluctuation distance the electric vehicle 1 is varied in the vertical direction in the running That is all. By doing so, even if one or both of the first ground plate 51 and the second ground plate 81 may be displaced from a predetermined position while the electric vehicle 1 is traveling, the first power supply line 3 and the second power line The power supply from the power supply line 7 is not interrupted. Therefore, the maintenance of power supply to the electric vehicle 1 can be easily realized, and the cost of the power supply system can be reduced. In addition, both the first variable distance and the second variable distance can be appropriately set and changed based on the width and undulation of the road surface, the experience value when traveling on the road surface, and the like. Further, in the power supply system of the electric vehicle 1 illustrated in FIG. 5, since the directions of erection of the first power supply line 3 and the second power supply line 7 with respect to the road surface are different, the first power supply line 3 and the second power supply line 7 The order of bending and stretching of the first pantograph 5 and the second pantograph 8 at the time of power supply and its stop does not matter.

  With reference to FIG. 6, one embodiment of a power supply system for an electric vehicle according to the third invention of the present application will be described. Note that the electric vehicle 1 is a truck having four or more wheels 2 in total, and only the driver's seat side is illustrated without the loading platform portion. In FIG. 6, the same parts as those in the first embodiment of the present invention shown in FIGS. 1 and 2 are denoted by the same reference numerals, and description thereof will be omitted below.

  In the power supply system of the electric vehicle 1 illustrated in FIG. 6, the second power supply line 9 paired with the first power supply line 3 installed above the road surface is laid on the road surface or below the road surface. When laying the second power supply line 9 below the road surface, for example, a pit or the like can be formed on the road, and the second power supply line 9 can be laid inside the pit. The second pantograph 10 a as the current collector 10 is provided under the floor of the electric vehicle 1 along with the laying position of the second power supply line 9. The second pantograph 10a is slidable from above on the second power supply line 9 and supports a second sliding plate 101a as a current collecting member 101 elongated in the vehicle width direction of the electric vehicle 1 and a second sliding plate 101a. And a second frame 102 that can be bent and stretched in the vertical direction. The second frame 102 includes an upper frame 102a and a lower frame 102b, and the upper frame 102a and the lower frame 102b are flexibly connected to each other by hinges at their adjacent ends. The lower frame 102b supports the second sliding plate 101a at its center. As in the embodiment shown in FIGS. 1 and 2, the second framework 102 also has a first balance link (not shown) for keeping the posture of the second slider 101a constant, and a swing of the upper frame 102a. And a second balance link (not shown) for swinging the lower frame 102b in association with the second frame. In the power collection system of the electric vehicle 1 shown in FIG. 6, a movable mechanism 11 that allows the second pantograph 10 a to slide in the vehicle width direction of the electric vehicle 1 is provided on the floor of the electric vehicle 1.

In the power supply system for the electric vehicle 1 shown in FIG. 6, the length l ₁ of the sliding plate 51 of the first pantograph 5 and the sliding range of the second pantograph 10 a by the movable mechanism 11 indicate that the moving electric vehicle 1 has a vehicle width. and the first variation distance or more predetermined varying in direction and bending and extending the range r ₂ of the second framework 102, the electric vehicle 1 in the traveling is a predetermined second fluctuation range or varying in the vertical direction. By doing so, even if one or both of the first ground plate 51 and the second ground plate 101a may be displaced from a predetermined position while the electric vehicle 1 is traveling, the first power supply line 3 and the second power plate Power supply from the power supply line 9 is not interrupted. Therefore, the maintenance of power supply to the electric vehicle 1 can be easily realized, and the cost of the power supply system can be reduced. Further, the structure of the current collector 10 can be simplified, and the cost of the power supply system can be further reduced. Note that, similarly to the power supply system of the electric vehicle 1 shown in FIG. 5, both the first variable distance and the second variable distance are appropriately set or changed based on the road width, the ups and downs, the experience value when traveling on the road, and the like. Can be. Further, in the power supply system of the electric vehicle 1 shown in FIG. 6, since the erection position of the first power supply line 3 and the laying position of the second power supply line 9 are greatly different, the first power supply line 3 and the second power supply line 9 are different. When the power is supplied and stopped, the order of bending and stretching of the first pantograph 5 and the second pantograph 10a does not matter.

  With reference to FIG. 7, one embodiment of a power supply system for an electric vehicle according to the third invention of the present application will be described. Note that the electric vehicle 1 is a truck, and only the driver's seat side is illustrated without the loading platform. In FIG. 7, the same parts as those in the third embodiment of the present invention shown in FIG. 6 are denoted by the same reference numerals, and the description thereof will be omitted below.

  In the power supply system of the electric vehicle 1 shown in FIG. 7, the current collecting member 101 is a roller 101 b having conductivity, and the roller 101 b is rotatable around a rotation shaft 12 in the vehicle width direction of the electric vehicle 1, and The electric vehicle 1 is different from the power collection system of the electric vehicle 1 shown in FIG. Even if the current collecting member 101 is a roller 101b having conductivity, the first contact plate 51 and / or the roller 101b may be displaced from a predetermined position during traveling of the electric vehicle 1 by the first contact plate 51 or the roller 101b. The power supply from the power supply line 3 and the second power supply line 9 is not interrupted. Therefore, the maintenance of power supply to the electric vehicle 1 can be easily realized, and the cost of the power supply system can be reduced.

  The embodiments of the first to third inventions of the present application have been described with reference to the drawings, but the first to third inventions of the present application are not limited thereto. For details on the type and structure of the electric vehicle, the materials and structures of the first and second power supply lines, the method of erection or laying, the structure of the pantograph including the slide plate and the framework, the structure and structure of the movable mechanism, etc. Various aspects may be employed.

DESCRIPTION OF SYMBOLS 1 ... Electric vehicle, 3 ... 1st power supply line, 4, 7, 9 ... 2nd power supply line, 5 ... 1st pantograph, 51 ... 1st sliding board, 52 ... 1st frame, 54 ... Revolving shaft, 6, 8 , 10a: second pantograph, 61, 81, 101a: second sliding plate, 62, 82, 102: second frame, 10: current collector, 101: current collecting member, 101b: roller, 11: movable mechanism, 12 ... Rotating axis, d ... Space between the first power supply line 3 and the second power supply line 4, l ₁ ... Length of the first ground plate 51, l ₂ ... Length of the second ground plate 61, l ₃ ... The length of the second sliding plate 81, r ₁ ... The bending range of the second framework 82, r ₂ ... The bending range of the second framework 102.

Claims (7)

A power supply system for an electric vehicle that supplies power to an electric vehicle traveling on a trackless road surface such that current flows to an electric motor mounted on the electric vehicle between a first and a second pair of power supply lines installed above the road surface. hand,
A first sliding plate that can slide on the first power supply line from below and that is longitudinal in the vehicle width direction of the electric vehicle, and a first frame that supports the first sliding plate and that can bend vertically in the vertical direction; A first pantograph provided on the roof of the vehicle,
A second sliding plate which is slidable in contact with the second power supply line from below and which is long in the vehicle width direction of the electric vehicle, and a second frame which supports the second sliding plate and is capable of flexing in the vertical direction; A second pantograph provided on the roof of the vehicle,
The first power supply line and the second power supply line are spaced apart from each other in the vehicle width direction of the electric vehicle, and the second power supply line is at a position lower than the first power supply line;
A power supply system for an electric vehicle, wherein a length of the first ground plate and the second ground plate is longer than twice an interval between the first power supply line and the second power supply line.   The first sliding plate is freely bendable in a range from a direction crossing the vehicle width direction to a position corresponding to the vehicle width direction at a position from the center in the longitudinal direction to one end on the second power supply line side. When the first frame bends and stretches, the first contacting plate is in a range from a direction intersecting the vehicle width direction to a position corresponding to the vehicle width direction so as not to contact the second power supply line. The power supply system for an electric vehicle according to claim 1, wherein the power supply system is bent.   The first slider is rotatable around a vertical rotation axis located at the center in the longitudinal direction, and the first slider is configured not to contact the second power supply line when the first framework bends and stretches. The power supply system for an electric vehicle according to claim 1, wherein the electric vehicle turns in a direction crossing a width direction of the electric vehicle. A power supply system for an electric vehicle that supplies power to an electric vehicle traveling on a trackless road surface so that current flows to an electric motor mounted on the electric vehicle between a first and a second pair of power supply lines,
A first sliding plate that is slidable from below on a first power supply line installed above a road surface and that is elongated in the vehicle width direction of the electric vehicle, and a first framework that supports the first sliding plate and is capable of bending vertically in the vertical direction. A first pantograph provided on the roof of the electric vehicle,
A second longitudinally extending second sliding plate, which is slidable from the side on a second power supply line installed above a road surface at a position lower than the first power supply line, and a second sliding plate; And a second pantograph provided on a side surface of the electric vehicle facing the second power supply line, the second frame having a second frame that can be bent and stretched in the vehicle width direction of the electric vehicle.
The length of the first sliding plate and the bending range of the second frame are equal to or greater than a predetermined first variation distance in which the traveling electric vehicle varies in the vehicle width direction, and the length of the second sliding plate is during traveling. A power supply system for an electric vehicle, wherein the electric vehicle is longer than a predetermined second fluctuation distance that changes in the vertical direction. A power supply system for an electric vehicle that supplies power to an electric vehicle traveling on a trackless road surface so that current flows to an electric motor mounted on the electric vehicle between a first and a second pair of power supply lines,
A first sliding plate that is slidable from below on a first power supply line installed above a road surface and that is elongated in the vehicle width direction of the electric vehicle, and a first framework that supports the first sliding plate and is capable of bending vertically in the vertical direction. A first pantograph provided on the roof of the electric vehicle,
A current collecting member that is slidable from above on a road surface or a second power supply line laid under the road surface, and a current collecting member that is long in the vehicle width direction of the electric vehicle, and a second framework that supports the current collecting member and is vertically bendable and stretchable. And a current collector provided under the floor of the electric vehicle, and a movable mechanism provided on the floor of the electric vehicle, such that the current collector is slidable in the vehicle width direction of the electric vehicle.
The length of the first sliding plate and the sliding range of the current collector by the movable mechanism are equal to or longer than a predetermined first variation distance in which the traveling electric vehicle varies in the vehicle width direction, and the bending range of the second framework is: A power supply system for an electric vehicle, wherein the traveling electric vehicle is longer than a predetermined second fluctuation distance that fluctuates in a vertical direction.   The power supply system for an electric vehicle according to claim 5, wherein the current collecting member is a second sip plate, and the current collector is a second pantograph. The current collecting member is a roller having conductivity, and the roller is rotatable about a rotation axis in the vehicle width direction of the electric vehicle and is long in the vehicle width direction of the electric vehicle. 6. The power supply system for an electric vehicle according to 5.

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