JP6138425B2 - Contact charging method and contact charging system for electric vehicle - Google Patents

Description

  The present invention relates to a contact charging method and a contact charging system for an electric vehicle in which a driving power storage device included in the electric vehicle is charged by contact charging from an external power supply device while the electric vehicle is traveling.

  Conventionally, a resonant non-contact charging (power feeding) system for a vehicle that charges a traveling electric vehicle in a non-contact manner has been proposed (Patent Document 1).

International Publication No. 2011/142421 Pamphlet

  In a resonant non-contact charging (power feeding) system for a vehicle that performs non-contact charging proposed in Patent Document 1, a primary resonance coil on an infrastructure (hereinafter also referred to as infrastructure) side and a secondary side on an electric vehicle side Since high-frequency and high-power transmission / reception is performed with the resonance coil, there are problems that external noise is greatly generated and power supply control is likely to be complicated.

  In order to solve this problem, a charging arm provided in an electric vehicle is brought into contact with an external power supply device while the electric vehicle is traveling, and the electric storage of the electric vehicle is transmitted from the power supply device through the charging arm. A contact charging system configured to charge the device is conceivable.

  However, in this contact charging system, when the electric vehicle traveling while charging through the charging arm swings in the vertical direction (pitching direction) due to the road surface condition or the accelerator / brake operation, the charging arm and the power feeding device There is a possibility that the contact between the two becomes unstable and the contact is not secured.

  The present invention has been made in consideration of such a problem, and the electric vehicle is moved in the vertical direction while the power feeding device and the electric vehicle are in contact charging through the charging arm of the electric vehicle. It is an object of the present invention to provide a contact charging method and a contact charging system for an electric vehicle that can prevent the contact state from being ensured even when the electric vehicle is swung, and can reduce the size of the charging system for the electric vehicle.

The contact charging method for an electric vehicle according to the present invention is provided with a V-shaped groove that is opposed to a side portion of the electric vehicle, opens in the vertical direction of the electric vehicle, and extends in the traveling direction of the electric vehicle. It has an overhead wire holding portion, and a positive overhead wire on one inner surface of the V-shaped groove constituting the overhead wire holding portion, and a negative overhead wire on the other inner surface, respectively, along the traveling direction and at a position maintaining an insulation distance from each other. A power supply device fixed to the overhead wire holding portion is provided, and includes a charging arm housed in the side portion of the electric vehicle, the charging arm at the tip of the charging arm corresponding to the positive electrode of the power supply device. A positive electrode power receiving unit and a negative electrode power receiving unit provided to face the overhead wire and the negative electrode overhead wire, the positive electrode power receiving unit and the negative electrode power receiving unit are configured as rolling wheels that roll in contact with the power supply device; Car the charging arm When extending toward the V-shaped groove and pressing toward the V-shaped groove, the tip of the charging arm and the bottom of the V-shaped groove are separated from each other, while the positive wire of the power feeding device and the charging arm are The positive electrode power receiving unit and the negative electrode overhead line of the power feeding device and the negative electrode power receiving unit of the charging arm are simultaneously contacted to charge the power storage device for driving the electric vehicle, and the positive electrode power receiving unit and the negative electrode power receiving unit are wherein the extension axis and a direction perpendicular to the direction of charging arms, the contact surface between the positive electrode overhead line and said negative electrode overhead line is characterized that you have inclined to said axis. Et al is, the charging arm, the charging arm may include vertically to allow the buffer suspension.

The contact charging system for an electric vehicle according to the present invention is a contact charging system for an electric vehicle including a power feeding device and an electric vehicle including a power storage device for driving to which electric power is supplied from the power feeding device. The power supply device includes an overhead wire holding portion provided with a V-shaped groove that is opposed to a side portion of the electric vehicle, opens in a vertical direction of the electric vehicle, and extends in a traveling direction of the electric vehicle. A positive overhead wire on one inner surface of the V-shaped groove constituting the overhead wire holding portion, and a negative overhead wire on the other inner surface are fixed to the overhead wire holding portion at positions that keep the insulation distance from each other along the traveling direction. The electric vehicle includes a charging arm housed in the side portion of the electric vehicle, and the charging arm is connected to the positive overhead wire corresponding to the power feeding device at the tip of the charging arm. Negative pole rack Has a positive power receiving portion and the negative electrode power receiving portion provided so as to face the positive electrode power receiving portion and the negative electrode power receiving unit is configured as a rolling wheel which rolls in contact with the power supply device, the charging arm, During power feeding, when extending toward the vehicle width direction and pressing toward the V-shaped groove, the tip end of the charging arm and the bottom of the V-shaped groove are separated from each other, The positive electrode power receiving unit of the charging arm and the negative electrode overhead line of the power feeding device and the negative electrode power receiving unit of the charging arm are simultaneously contacted to charge the power storage device , and the positive electrode power receiving unit and the negative electrode power receiving unit are the direction perpendicular to the extending direction of the charging arm and a shaft, the contact surface between the positive electrode overhead line and said negative electrode overhead line is characterized that you have inclined to said axis. Et al is, the charging arm, the charging arm may include vertically to allow the buffer suspension.

  According to the present invention, the charging arm provided on the vehicle body and provided with the positive power receiving unit and the negative power receiving unit at the top and bottom of the tip is extended to the side of the vehicle body and provided along the traveling direction of the traveling path. When the power storage device for driving mounted on the electric vehicle is charged while traveling by being brought into contact with the overhead line, the electric power vehicle opens in the vertical direction opposite to the side portion of the electric vehicle. The positive electrode overhead wire of the power feeding device, the positive electrode power receiving portion of the charging arm, and the power feeding device in which the positive electrode overhead wire is fixed to one inner surface of the V-shaped groove formed extending in the traveling direction of the vehicle and the negative electrode overhead wire is fixed to the other inner surface Since the power storage device for driving the electric vehicle is charged at the same time by contacting the negative power line of the charging arm and the negative power receiving portion of the charging arm at the same time, the charging arm is moved up and down depending on the road surface condition or the brake operation. Swing , Becomes the leading end portion of the charging arm in said V-shaped groove is maintained, contact may no longer be ensured is suppressed.

  In addition, since the positive and negative overhead wires are fixed above and below the inner surface of the V-shaped groove, the power feeding device is miniaturized and the charging arm is miniaturized. As a result, the contact charging system as a whole can be miniaturized. it can.

  Since charging is performed by contact from the power feeding device, the generation of external noise is significantly less than that of the resonance type non-contact charging system, and power feeding control is simple.

  The power supply device and the charging arm of the contact charging system for the electric vehicle are also included in the present invention.

  According to the present invention, the positive electrode receiving portion and the negative electrode receiving portion of the charging arm on the vehicle body side come into contact with the positive and negative overhead wires fixed above and below the inner surface of the V-shaped groove extending in the traveling direction of the electric vehicle. Since the charging is configured, even if the charging arm swings up and down due to road surface conditions or brake operation, the tip of the charging arm is held in the V-shaped groove, and the electric vehicle is However, it is possible to prevent contact from being prevented from being ensured during traveling while performing contact charging via the charging arm, and to achieve downsizing of the contact charging system for an electric vehicle.

1A is a plan view of a contact charging system for an electric vehicle to which the inventive method according to this embodiment is applied, FIG. 1B is a side view, and FIG. 1C is a front view. It is a partial omission front sectional view of an overhead wire holding part concerning the 1st example which constitutes a contact charge system. It is a partial omission front view of the charge head concerning the 1st example which constitutes a contact charge system. It is a partially omitted plan view of the charging arm according to the first embodiment constituting the contact charging system. It is a partially-omission perspective view which shows the contact state of the overhead wire hold | maintained at the overhead wire holding part which concerns on the said 1st Example which comprises the contact charging system which concerns on 1st Embodiment, and the charging arm which concerns on the said 1st Example. FIG. 3 is a partially omitted front cross-sectional view showing a contact state between an overhead wire held in the overhead wire holding unit according to the first example and the charging arm according to the first example constituting the contact charging system according to the first embodiment. . It is a perspective view which shows the contact state of the overhead wire hold | maintained at the overhead wire holding part which concerns on 2nd Example which comprises the contact charging system which concerns on 2nd Embodiment, and the charging arm which concerns on 2nd Example. It is a partially omitted front sectional view showing a contact state between an overhead wire held in the overhead wire holding part according to the second example and the charging arm according to the second example constituting the contact charging system according to the second embodiment. . It is a front view which shows the contact state of the overhead wire hold | maintained at the overhead wire holding part which concerns on the said 1st Example which comprises the contact charging system which concerns on 3rd Embodiment, and the charging arm which concerns on 3rd Example. It is a side view which shows the contact state of the overhead wire hold | maintained at the overhead wire holding part which concerns on the said 1st Example which comprises the contact charging system which concerns on 3rd Embodiment, and the charging arm which concerns on the said 3rd Example. It is a side view which shows the contact state of the overhead wire hold | maintained at the overhead wire holding part which concerns on the said 1st Example which comprises the contact charging system which concerns on the modification of 3rd Embodiment, and the charging arm which concerns on the modification of 3rd Example. is there. It is a side view of the charging arm which concerns on the modification of the said 3rd Example which comprises the contact charging system which concerns on the modification of 3rd Embodiment. It is a perspective view which shows the contact state of the overhead wire hold | maintained at the overhead wire holding part which concerns on the said 2nd Example which comprises the contact charging system which concerns on 4th Embodiment, and the charging arm which concerns on a 4th Example. It is a front view which shows the contact state of the overhead wire hold | maintained at the overhead wire holding part which concerns on the said 2nd Example which comprises the contact charging system which concerns on 4th Embodiment, and the charging arm which concerns on the said 4th Example. It is a side view which shows the contact state of the overhead wire hold | maintained at the overhead wire holding part which concerns on the said 2nd Example which comprises the contact charging system which concerns on 4th Embodiment, and the charging arm which concerns on the said 4th Example.

  Embodiments of the present invention will be described below with reference to the drawings.

[Common configuration]
1A, 1B, and 1C show a schematic overall configuration of a contact charging system 12 (first embodiment) of an electric vehicle 10 to which the inventive method according to this embodiment is applied.

The electric vehicle 10 is a vehicle on which an electric motor 110 for vehicle propulsion (shown only in FIG. 1A) and a power storage device 100 for driving the electric motor 110 (shown only in FIG. 1A) are mounted. This corresponds to a hybrid vehicle equipped with an internal combustion engine, a fuel cell vehicle equipped with a fuel cell, and the like.

The contact charging system 12 basically includes a power feeding device 26 that includes an overhead wire holding portion 14 made of an insulating material, and an electric vehicle 10 that includes a charging arm 18 on a side portion 10 s of the vehicle body 11 . The charging arm 18 may be provided on both sides of the electric vehicle 10.

  The power feeding device 26 is provided, for example, on the shoulder of a road (including an expressway) that is the traveling road 70 or the shoulder of the traveling road 70 of an automobile race track with a length of a predetermined section. The length of the predetermined section is set to such a length that the electric vehicle 10 having a predetermined power consumption can charge a charge amount that can travel from one power supply device 26 position to the next power supply device 26 position.

The electric vehicle 10 travels along the power feeding device 26 on the traveling path 70 where the power feeding device 26 is installed, and charges the power storage device 100 from the power feeding device 26 via the charging arm 18 while traveling.

  The overhead wire holding portion 14 extends the length of the predetermined section, and the back surface side is fixed to the guard posts 20 (FIG. 1C) at predetermined intervals.

  On the surface side of the overhead wire holding part 14, an overhead wire 24 composed of a conductive material positive electrode wire 24p to which a high direct current voltage is applied from an external power supply (not shown) and a conductive material negative electrode wire 24n is fixed in a rail shape. Has been. Instead of direct current, alternating current may be used.

  The charging head 34 that forms the tip of the charging arm 18 includes a positive electrode power receiving unit 36p that is in contact with the positive electrode overhead line 24p and a negative electrode power receiving unit 36n that is in contact with the negative electrode overhead line 24n. Part 36 is attached.

  In addition, although each component of the electric vehicle 10 shown to FIG. 1A, FIG. 1B and FIG. 1C has drawn the component which concerns on 1st Example for convenience, those electric circuit functions are the Example mentioned later. But it is equivalent.

  FIG. 2 shows a partially omitted front cross-sectional configuration of the overhead wire holding portion 14 according to the first embodiment.

  FIG. 3 shows a partially omitted front configuration of the charging head 34 according to the first embodiment.

  FIG. 4 shows a partially omitted planar configuration of the charging arm 18 according to the first embodiment.

  FIG. 5 shows a perspective configuration showing a contact state between the overhead wire 24 held by the overhead wire holding unit 14 and the charging arm 18 in the contact charging system 12 according to the first embodiment.

  FIG. 6 shows a front configuration showing a contact state between the overhead wire 24 held by the overhead wire holding unit 14 and the charging arm 18 in the contact charging system 12 according to the first embodiment.

  Hereinafter, with reference to FIG. 1A, FIG. 1B, FIG. 1C, and FIGS. 2-6, the overhead wire holding | maintenance part 14 which concerns on 1st Example, the charging arm 18 which concerns on 1st Example, and these overhead wire holding | maintenance parts 14 and charging The contact charging system 12 according to the first embodiment including the arm 18 will be described in more detail.

  As shown in FIGS. 1A and 4, the charging arm 18 includes a charging head 34, a substantially L-shaped bracket 53 to which the charging head 34 is attached, and an arrow q (q1, q2 And a slider crank mechanism 30 that moves (rotates) in the direction).

  The slider crank mechanism 30 has an arm portion 19 extending between a bracket 53 and a pin 32 (shaft) provided on the vehicle body of the electric vehicle 10, and one end rotatably attached to the middle of the arm portion 19. A spring damper 39a having the other end rotatably attached to an actuator 38 that slides on the slide rail 37 in the direction of the arrow p, and a spring damper 39b having one end fixed to the vehicle body and the other end fixed to the actuator 38. Is done.

  When the actuator 38 is urged to move on the slide rail 37 in the direction of the arrow p1, the arm portion 19 has an arrow about the pin 32 as a rotation center through a spring damper 39a that functions as a lever that swings within a limited range. The power receiving unit 36 of the charging head 34 is urged by the spring dampers 39a and 39b to be in contact with the overhead wire 24 by moving in the q1 direction.

  In this way, the charging arm 18 extends (deploys or tilts) from the side portion 10s of the electric vehicle 10 to the power feeding device 26 side. That is, the charging arm 18 is extended to the lateral outside of the vehicle body 11.

  On the other hand, the actuator 38 is biased so as to move on the slide rail 37 in the direction of the arrow p2, so that the arm portion 19 is moved in the direction of the arrow q2 and the charging head 34 is returned to the home position of the vehicle body 11.

The charging head 34 is attached to the head main body 41 via an attachment member 54 (see FIG. 3) at one end of the bracket 53. The head main body 41 is generally covered with a case 35 made of an insulating material except for an electrical contact portion of the power receiving unit 36.

  As described above, the power feeding device 26 includes the overhead wire holding portion 14, and the bottom portion of the overhead wire holding portion 14 is fixed to the bottom portion 60 d of the channel-shaped guide recess 60 (see FIG. 6) that is a non-conductive member, It is fixed to the guard post 20 via the bottom 60d of the guide recess 60 (see FIG. 1C).

The guide recess 60 includes guide portions 60a, 60b, and 60c in addition to the bottom portion 60d. Upper and lower guide portions 60c extend in the horizontal direction from the upper and lower ends of the bottom portion 60d toward the traveling road 70 (road). The vertical distance between the upper and lower guide portions 60c is redundant with respect to the outer diameter of the case 35 (see FIG. 6) of the charging head 34. The upper and lower guide portions 60c are further connected to the upper and lower guide portions 60b extending in the horizontal direction. The vertical distance between the upper and lower guide portions 60 b is set smaller than the outer shape of the case 35 of the charging head 34. The upper and lower guide portions 60b are further connected to the upper and lower guide portions 60a that expand in the vertical direction UL . The interval between the open ends of the guide portion 60a is set to an interval at which the charging head 34 is guided into the guide recess 60 even when the charging head 34 swings in the vertical direction UL when the charging arm 18 is extended.

The surface side of the overhead wire holding part 14 is provided with a V-shaped groove 23 that opens in the vertical direction UL of the side part 10 s of the electric vehicle 10 and extends in the traveling direction RD of the electric vehicle 10.

  The back surface of the overhead wire 24p in the overhead wire 24 is fixed to one inner surface of the V-shaped groove 23, and the back surface of the negative wire 24n in the overhead wire 24 is fixed to the other inner surface of the V-shaped groove 23. The positive electrode overhead wire 24p and the negative electrode overhead wire 24n are partially embedded in the overhead wire holding portion 14 and fixed at a position that maintains an insulation distance from each other. The contact side of the positive electrode overhead line 24p and the negative electrode overhead line 24n to the charging head 34 is V-shaped.

  On the other hand, the charging head 34 includes a power receiving unit 36 having a positive electrode power receiving unit (positive electrode roller) 36p and a negative electrode power receiving unit (negative electrode roller) 36n, which are rolling wheels (rotating rollers). The positive electrode power receiving part 36p and the negative electrode power receiving part 36n have a truncated cone shape whose bottom surfaces symmetrical to each other in the vertical direction with respect to the axis of the charging head 34 (arm part 19), that is, the contact part is formed in the V-shaped groove 23. It has a wedge shape that makes line contact.

The power receiving unit 36 is engaged with the bearing units 40 and 42 (see FIG. 3) of the head main body 41. A suspension 48 in the vehicle width direction WD by the spring 44 and a suspension 50 in the vertical direction UL by the springs 46a and 46b are provided at the rear end of the head body 41, respectively.

  The charging head 34 is fixed to a bracket 53 formed at the other end of the arm portion 19 through an attachment member 54 constituting the suspension 50 (see FIG. 4).

Basically, the contact charging system 12 according to the first embodiment including the charging arm 18 according to the first example configured as described above and the power supply device 26 according to the first example is traveling. When the electric vehicle 10 reaches the position in the vicinity of the power feeding device 26, the charging arm 18 is urged outward in the vehicle width direction WD , and the charging head 34 is guided to the overhead line 24 through the guide recess 60, as shown in FIG. As shown in FIGS. 5 and 6, the charging arm 18 and the power feeding device 26 are in electrical contact and connected.

In this way, the charging arm 18 provided with the positive power receiving unit 36p and the negative power receiving unit 36n above and below the tip is extended to the side of the vehicle body 11, and the overhead wire 24 provided along the traveling direction of the traveling path 70. can it to charge while traveling power storage device 100 for driving that is mounted on the electric vehicle 10 by contacting the.

In other words, the positive overhead wire 24p is formed on one inner surface of the V-shaped groove 23 that is formed in the vertical direction UL of the electric vehicle 10 so as to face the side portion 10s of the electric vehicle 10 and extend in the traveling direction RD of the electric vehicle 10. The positive electrode overhead line 24p of the power feeding device 26 and the positive electrode power receiving unit 36p of the charging arm 18 and the negative electrode overhead wire 24n of the power feeding device 26 and the negative electrode power receiving unit 36n of the charging arm 18 are simultaneously brought into contact with each other, Since the power storage device 100 for driving the electric vehicle 10 is configured to be charged, even if the charging arm 18 swings in the vertical direction UL due to the road surface condition of the traveling path 70 or a brake operation, the action of the suspension 50 and the like. The charging head 34 which is the tip of the charging arm 18 is held in the V-shaped groove 23 below, and it is suppressed that contact is not ensured.

  In addition, since the positive overhead wire 24p and the negative overhead wire 24n are fixed above and below the inner surface of the V-shaped groove 23, the power feeding device 26 is miniaturized and the charging arm 18 is miniaturized. As a result, the entire contact charging system 12 is obtained. Can be miniaturized.

The charging arm 18 is shown in FIG. 1B, in the pin 32 (axis) spring is interposed vertically UL, functions as the suspension in the vertical direction UL.

  Hereinafter, the second embodiment to the fourth embodiment will be described. In the drawings referred to below, the same or corresponding parts as those shown in FIGS. 1 to 6 are designated by the same reference numerals or the same reference numerals. A detailed description is omitted with a hundreds digit. Further, since the slider crank mechanism 30 that extends the charging arm 18 to the side or accommodates it on the vehicle body side has the same configuration as that shown in FIG. 1A, its detailed description is omitted.

[Second Embodiment]
7 and 8 constitute the overhead wire 124 held by the overhead wire holding part 114 according to the second example constituting the contact charging system 112 according to the second embodiment, and the charging arm 118 according to the second example. The engagement state (contact state) of the charging head 134 according to the second embodiment is shown.

  The charging head 134 includes a power receiving unit 136 composed of a semiconical trapezoidal positive electrode power receiving unit 136p and a negative electrode power receiving unit 136n embedded in a resin material head main body 141 except for the surface by a resin mold. The positive power receiving unit 136p and the negative power receiving unit 136n do not roll like the positive power receiving unit 36p and the negative power receiving unit 36n of the charging head 34 shown in FIG.

A rolling wheel 74 is attached to the bearing 72 at the tip of the charging head 134, and the rolling wheel 74 rolls in the running direction RD on the surface of the overhead wire holding part 114 in which the bottom of the V-shaped groove 123 is a U-shaped groove. It is like that.

The overhead wire holding portion 114 is fitted on one inner surface of the V-shaped groove 123 with a protrusion on the back surface side of the cross-section gourd-shaped (substantially elliptical center portion) positive electrode overhead wire 124p, and on the other inner surface A protrusion on the back surface side of the negative electrode overhead line 124n is fitted. The surface sides of the positive electrode overhead line 124p and the negative electrode overhead line 124n are formed in a semicircular shape (formed in a round bar shape with respect to the traveling direction RD ).

While the rolling wheel 74 of the charging arm 118 rolls in the U-shaped groove at the bottom of the V-shaped groove 123, the positive wire 124p of the overhead wire holding portion 114 and the positive power receiving portion 136p of the charging head 134 are brought into sliding contact by point contact, and the overhead wire The power storage device 100 for driving the electric vehicle 10 is charged from the power feeding device 126 through the overhead wire 124 and the charging arm 118 when the negative electrode overhead wire 124n of the holding unit 114 and the negative electrode power receiving unit 136n of the charging head 134 are in sliding contact with each other. The

[Third embodiment]
9 and 10 constitute an overhead wire 24 held by the overhead wire holding part 14 according to the first example constituting the contact charging system 212 according to the third embodiment, and a charging arm 218 according to the third example. The engagement state (contact state) of the charging head 234 according to the third embodiment is shown. The leading end of the charging head 234 is expanded in a reverse V shape, and a power receiving unit 236 including a positive power receiving unit 236p and a negative power receiving unit 236n, which are cylindrical rolling wheels, is formed on the reverse V-shaped holding units 238a and 238b. It is attached. The positive power receiving unit 236p and the negative power receiving unit 236n are in sliding contact with each other while rolling on the positive overhead line 24p and the negative overhead line 24n, so that the power storage device 100 for driving the electric vehicle 10 is supplied from the power feeding device 26 through the charging head 234. Charged.

11 and 12 show an overhead wire 24 held by the overhead wire holding part 14 according to the first example that constitutes the contact charging system 212 ′ according to the modified example of the third embodiment, and a modified example of the third example. The contact state of the charging head 234 'is shown. The charging head 234 'has an inverted V shape, and upper and lower holding portions 238a' and 238b 'are offset with respect to the traveling direction RD .

The offset upper and lower holding portions 238a 'and 238b' are attached with a power receiving portion 236 'comprising a positive electrode power receiving portion 236p' and a negative electrode power receiving portion 236n 'which are cylindrical rolling wheels. The positive electrode power receiving unit 236p ′ and the negative electrode power receiving unit 236n ′ are in sliding contact with each other while rolling on the positive electrode overhead line 24p and the negative electrode overhead line 24n, respectively, so that power storage for driving the electric vehicle 10 is performed from the power feeding device 26 through the charging head 234 ′. The device 100 is charged.

Since the positive power receiving unit 236p ′ and the negative power receiving unit 236n ′ are offset and attached in the front-rear direction of the traveling direction RD , the charging head 234 ′ of the charging head 234 ′ is compared with the charging head 234 of FIG. 9 and FIG. The pitching behavior of the charging head 234 'in the moving direction (the traveling direction RD of the electric vehicle 10) is stabilized.

[Fourth embodiment]
13, 14, and 15 show an overhead wire 124 held by the overhead wire holding unit 114 according to the second example that constitutes the contact charging system 312 according to the fourth embodiment, and a charging arm 318 according to the fourth example. The contact state of the charge head 334 which concerns on 4th Example which comprises is shown.

  The charging head 334 has a triangular prism base 348, and an attachment member 354 is attached to one side surface of the base 348, and the attachment member 350 is attached to the top of the base 348 at the top and bottom (in the direction orthogonal to the paper surface in FIG. 14). A rolling wheel 352 is attached via the via.

  In addition, a power receiving unit provided with a positive power receiving unit 336p and a negative power receiving unit 336n that are urged to the positive overhead wire 124p side and the negative overhead wire 124n side via springs 356 so as to be parallel to the remaining both side surfaces of the base portion 348. A mounting plate 358 to which 336 is attached is provided.

  The attachment plate 358 is configured to be urged toward the overhead wire 124 side by a spring 356 with each shaft provided between the opposing surfaces of the attachment members 350 on the rolling wheel 352 side serving as a support shaft side.

  That is, the attachment plate 358 is urged in the direction of the arrow r by the spring mechanism 95 including the spring 356, the pin 94, the regulating member 93, and the pin 92 and its movement is regulated.

In the charging head 334 according to the fourth embodiment, the rolling wheel 352 rolls on the U-shaped groove of the V-shaped groove 123 having the groove bottom portion formed into a U-shaped groove, and the positive electrode power receiving unit with respect to the positive overhead wire 124p. 336p with contacts by compression force of the spring 356, the negative electrode power receiving unit 336n against the negative contact wire 124n that is contacted by the compression force of the spring 356, from the power supply device 126 for driving the electric vehicle 10 through the charging head 3 34 The power storage device 100 is charged.

[Summary of Embodiment]
As described above, according to the above-described embodiment, for example, as shown in FIGS. 1A, 1B, 1C, and 6, the upper and lower sides of the electric vehicle 10 are opposed to the side portion 10s of the electric vehicle 10. And has an overhead wire holding part 14 provided with a V-shaped groove 23 formed to open in the direction UL and extend in the traveling direction RD of the electric vehicle 10, and one of the V-shaped grooves 23 constituting the overhead wire holding part 14 The electric power vehicle 10 is provided with a power supply device 26 fixed to the overhead wire holding portion 14 at a position where the positive electrode overhead wire 24p is disposed on the inner surface and the negative electrode overhead wire 24n is disposed on the other inner surface along the traveling direction RD and maintaining an insulation distance from each other. A charging arm 18 having a positive electrode power receiving part 36p and a negative electrode power receiving part 36n which are housed in the side part 10s of the power supply device 26 and are provided at the front end so as to be opposed to the corresponding positive electrode overhead line 24p and the negative electrode overhead line 24n of the power feeding device 26. Extending outward in the width direction WD, by contacting the negative electrode power receiving unit 36n of the positive electrode contact wire 24p of the power supply apparatus 26 and the negative electrode contact wire 24n of the positive power receiving portion 36p and the power feeding device 26 of the charging arm 18 charging arm 18 at the same time, the electric Since the power storage device 100 for driving the vehicle 10 is configured to be charged, even if the charging arm 18 swings in the vertical direction UL due to road surface conditions or brake operation, the charging arm 18 is placed in the V-shaped groove 23. The charging head 34 that is the tip is held, and it is suppressed that contact is not ensured.

  In addition, since the positive overhead wire 24p and the negative overhead wire 24n are fixed above and below the inner surface of the V-shaped groove 23, the power feeding device 26 is miniaturized and the charging arm 18 is miniaturized. As a result, the entire contact charging system 12 is obtained. Can be miniaturized.

  Note that the present invention is not limited to the above-described embodiment, and it is needless to say that various configurations can be adopted based on the contents described in this specification.

DESCRIPTION OF SYMBOLS 10 ... Electric vehicle 12 ... Contact charge system 14 ... Overhead wire holding part 18 ... Charging arm 23 ... V-shaped groove 24 ... Overhead wire 24n ... Negative electrode overhead wire 24p ... Positive electrode overhead wire 26 ... Power feeding device 34 ... Charging head 36p ... Positive electrode power receiving part 36 ... Power reception Part 36n ... Negative electrode power receiving part

Claims (6)

An overhead wire holding portion provided with a V-shaped groove that is opposed to a side portion of the electric vehicle, opens in the vertical direction of the electric vehicle, and extends in the traveling direction of the electric vehicle. A power feeding device in which a positive overhead wire is formed on one inner surface of the V-shaped groove and a negative overhead wire on the other inner surface are fixed to the overhead wire holding portion at a position that keeps an insulation distance from each other along the traveling direction. Provided,
A charging arm housed in the side portion of the electric vehicle;
The charging arm has a positive power receiving unit and a negative power receiving unit that are provided at the tip of the charging arm so as to oppose the corresponding positive and negative electrode wires of the power feeding device,
The positive electrode power receiving unit and the negative electrode power receiving unit are configured as rolling wheels that roll in contact with the power feeding device,
When the charging arm extends in the vehicle width direction and is pressed toward the V-shaped groove, the tip end of the charging arm and the bottom of the V-shaped groove are separated from each other, while the positive overhead wire of the power feeding device is separated. And charging the power storage device for driving the electric vehicle by simultaneously contacting the negative power receiving unit of the charging arm and the negative power line of the power feeding device and the negative power receiving unit of the charging arm ,
The positive electrode power receiving portion and the negative electrode power receiving unit includes a wherein a extending axis and a direction perpendicular to the direction of charging arms, the contact surface between the positive electrode overhead line and said negative electrode overhead line is you are inclined to said axis To charge the electric vehicle. In the contact charging method of the electric vehicle according to claim 1 ,
The charging arm includes a suspension capable of buffering the charging arm in a vertical direction. A contact charging system for an electric vehicle comprising: a power supply device; and an electric vehicle including a power storage device for driving to which electric power is supplied from the power supply device,
The power supply device
An overhead wire holding portion provided with a V-shaped groove formed opposite to a side portion of the electrically powered vehicle and opened in a vertical direction of the electrically powered vehicle and extending in a traveling direction of the electrically powered vehicle; A positive overhead wire on one inner surface of the V-shaped groove and a negative overhead wire on the other inner surface are fixed to the overhead wire holding portion at a position along the traveling direction and maintaining an insulation distance from each other. ,
The electric vehicle includes a charging arm housed in the side portion of the electric vehicle,
The charging arm has a positive power receiving unit and a negative power receiving unit that are provided at the tip of the charging arm so as to oppose the corresponding positive and negative electrode wires of the power feeding device,
The positive electrode power receiving unit and the negative electrode power receiving unit are configured as rolling wheels that roll in contact with the power feeding device,
When the charging arm extends in the vehicle width direction and is pressed toward the V-shaped groove during power feeding, the tip of the charging arm and the bottom of the V-shaped groove are separated from each other, while the power feeding device The positive power line of the charging arm and the positive power receiving unit of the charging arm and the negative power cable of the power feeding device and the negative power receiving unit of the charging arm are simultaneously contacted to charge the power storage device ,
The positive electrode power receiving portion and the negative electrode power receiving unit includes a wherein a extending axis and a direction perpendicular to the direction of charging arms, the contact surface between the positive electrode overhead line and said negative electrode overhead line is you are inclined to said axis Electric vehicle contact charging system. In the contact charging system of the electric vehicle according to claim 3 ,
The charging arm includes a suspension capable of buffering the charging arm in a vertical direction. The power feeding device of the contact charging system for an electric vehicle according to claim 3 or 4 . The charging arm of the contact charging system for an electric vehicle according to claim 3 or 4 .

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