JP2011250593A - Vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle that is facilitated in positioning of a coil for power transmission arranged at vehicle external and a coil for power receiving arranged at a bottom of the vehicle.SOLUTION: The vehicle 100 can receive power in a noncontact state with the coil unit 223A for power transmission installed at the external of vehicle, and includes a coil unit 110 for power receiving arranged at the bottom of the vehicle, and the guide plates 112A and 112B prepared on the bottom of the vehicle. The coil unit 223A for power transmission is located more below than the bottom, and the guide plates 112A and 112B guide the coil unit 223A for power transmission into a charging area R which is located under the transmitting coil.

Description

  The present invention relates to a vehicle, and more particularly to a vehicle capable of receiving electric power from the outside without contact.

  Like a charging system for an electric vehicle described in JP-A-9-213378, a charging device described in JP-A-9-172743, and parking equipment described in JP-A-2003-61266 Conventionally, various charging systems and charging devices for charging a battery mounted on a vehicle using electromagnetic induction have been proposed.

  Furthermore, in recent years, various types of vehicles that receive electric power from the outside via an electromagnetic field, such as vehicles described in Japanese Patent Application Laid-Open No. 2009-106136, have been proposed.

JP-A-9-213378 JP-A-9-172743 JP 2003-61266 A JP 2009-106136 A

  The conventional vehicle does not include a configuration for positioning the power transmission coil unit disposed outside the vehicle and the power reception coil unit provided on the bottom surface of the vehicle. For this reason, it is difficult to position the power receiving coil and the power receiving coil in the stage before charging.

  The present invention has been made in view of the above-described problems, and an object thereof is to facilitate positioning of a power transmission coil disposed outside the vehicle and a power reception coil disposed on the bottom surface of the vehicle. It is to provide a vehicle that has been realized.

  A vehicle according to the present invention can receive power in a non-contact state with a power transmission coil installed outside the vehicle, and a power reception coil disposed on the bottom surface of the vehicle, and a guide provided on the bottom surface of the vehicle. A part. The power transmission coil is positioned below the bottom surface and provided so as to be movable at least in the width direction of the vehicle, and the guide unit guides the power transmission coil within a predetermined range positioned below the power transmission coil. .

  Preferably, the vehicle further includes a first rear wheel and a second rear wheel that are spaced from each other in the width direction of the vehicle, and the guide portion includes a first guide plate that is provided rearward of the first rear wheel; And a second guide plate provided behind the second rear wheel.

  Preferably, the first guide plate and the second guide plate are formed such that the distance in the vehicle width direction between the first guide plate and the second guide plate increases toward the rear of the vehicle. Preferably, a positioning member for positioning the power transmission coil guided by the guide portion within a predetermined range is further provided. Preferably, the positioning member is a buffer member.

  ADVANTAGE OF THE INVENTION According to this invention, positioning with the coil for power transmission arrange | positioned outside the vehicle and the coil for power reception mounted in the vehicle can be performed easily.

It is a perspective view which shows typically the charging equipment which concerns on this Embodiment. FIG. 2 is a side view showing a rear portion of vehicle 100. FIG. 3 is a rear view showing a rear surface of the vehicle 100 shown in FIG. 2. It is a perspective view which shows the coil mounting device 220 typically. FIG. 5 is a cross-sectional view of the coil mounter 220. It is sectional drawing of the coil unit for electric power transmission 223 and the buffer member 224. FIG. 2 is a side sectional view of a power receiving coil unit 110 mounted on a vehicle 100. FIG. 3 is a cross-sectional view of a power receiving coil unit 110. FIG. FIG. 2 is a schematic diagram illustrating a power transmission principle for transmitting power from a power supply facility 200 to a vehicle 100. It is the figure which showed the relationship between the distance from an electric current source (magnetic current source), and the intensity | strength of an electromagnetic field. It is a detailed block diagram of the vehicle 100 shown in FIG. It is the schematic diagram which showed the mode at the time of parking the vehicle 100 in the parking space of the electric power feeding equipment 200 with the eyes | visual_axis from the vehicle 100 side. It is the schematic diagram which showed the mode at the time of parking the vehicle 100 in the parking space of the electric power feeding equipment 200 with the eyes | visual_axis from the vehicle 100 side. It is the schematic diagram which showed the mode at the time of parking the vehicle 100 in the parking space of the electric power feeding equipment 200 with the eyes | visual_axis from the vehicle 100 side. It is a top view of guide plates 112A and 112B.

  A vehicle and a charging system according to an embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a perspective view schematically showing a charging facility according to the present embodiment. The vehicle 100 is charged by the power supply facility 200 in a stopped state.

  The power supply facility 200 is provided in a parking space where the vehicle 100 is parked, and the power supply facility 200 is connected to a ring stop 201 that stops the rear wheel 101 of the vehicle 100, a coil mounter 220, and a coil mounter 220. A high frequency power driver 221 and an AC power source 222 to which the high frequency power driver 221 is connected are included.

  AC power supply 222 is a power supply external to the vehicle, for example, a system power supply. The high frequency power driver 221 converts the power received from the AC power source 222 into high frequency power and supplies the converted power to the coil mounter 220. The frequency of the high frequency power generated by the high frequency power driver 221 is, for example, 1M to 10 and several MHz. The coil mounter 220 and the ring stop 201 are installed on the ground. In the example shown in FIG. 1, a mark line such as a white line 202 is provided on the ground. The driver can place the vehicle 100 in the parking space so as to receive power from the coil mounter 220 by operating the vehicle 100 while confirming the white line 202.

  FIG. 2 is a side view showing a rear portion of the vehicle 100. As shown in FIG. 2, vehicle 100 includes a power receiving coil unit 110 and a battery 150.

  The power receiving coil unit 110 is disposed on the lower surface of the rear floor panel 111, for example. Rear floor panel 111 divides the inside and outside of vehicle 100 and corresponds to the lower surface of vehicle 100. Battery 150 is mounted on the upper surface of rear floor panel 111. The battery 150 is disposed above the power receiving coil unit 110.

  When charging battery 150, vehicle 100 stops in the parking space of power supply facility 200. When the vehicle 100 stops in the parking space of the power supply facility 200, the power receiving coil unit 110 is positioned above the coil mounter 220. With the power receiving coil unit 110 and the coil mounting device 220 facing each other, the coil mounting device 220 transmits power to the power receiving coil unit 110, the power receiving coil unit 110 receives the power, and the battery 150 is charged. Details of the power transmission method will be described later.

  As shown in FIG. 2, the power receiving coil unit 110 is arranged on the rear side of the center portion of the vehicle 100 in the front-rear direction. For this reason, when charging the battery 150, the vehicle 100 enters the parking space while moving backward.

  FIG. 3 is a rear view showing the rear surface of vehicle 100 shown in FIG. As shown in FIG. 3, a guide portion 113 is provided on the lower surface of the rear floor panel or the rear bumper of the vehicle 100, and the guide portion 113 includes two guides provided at intervals in the width direction of the vehicle 100. Includes plates 112A and 112B.

  FIG. 4 is a perspective view schematically showing the coil mounter 220, and FIG. 5 is a cross-sectional view of the coil mounter 220. As shown in FIG. 4, the coil mounter 220 includes a power transmission coil unit 223, an annular buffer member 224 attached to the outer periphery of the power transmission coil unit 223, and a support base 225 that supports the power transmission coil unit 223. And a wheel 226 provided on the bottom surface of the support base 225.

  As shown in FIG. 5, the power transmission coil unit 223 includes a resin case 227, a cylindrical bobbin 228 disposed in the resin case 227, a primary coil 229 mounted on the outer peripheral surface of the bobbin 228, and primary self-resonance. A coil 230 and a shield material 231 formed on the inner peripheral surface of the resin case 227 are included.

  The primary coil 229 and the primary self-resonant coil 230 are provided at an interval in the height direction of the bobbin 228. The shield material 231 is formed so as to open upward, and is formed on the inner peripheral surface and the bottom surface of the resin case 227. The buffer member 224 is attached to the outer peripheral surface of the resin case 227, and is formed of an elastically deformable resin or the like.

  The support base 225 includes a spring housing case 232 and a plurality of springs 233 housed in the spring housing case 232. A power transmission coil unit 223 is fixed to the upper surface of the spring housing case 232. A plurality of wheels 226 are provided on the lower surface of the spring housing case 232, and an opening 234 is formed on the lower surface of the spring housing case 232. A hollow cylindrical portion 235 standing on the ground is inserted into the opening 234. A predetermined interval is provided between the outer peripheral surface of the cylindrical portion 235 and the opening 234. One end of the spring 233 is fixed to the inner peripheral surface of the spring housing case 232, and the other end of the spring 233 is fixed to the cylindrical portion 235. A plurality of springs 233 are provided at intervals in the circumferential direction of the cylindrical portion 235.

  A cable 236 is inserted into the tube portion 235. One end of the cable 236 is connected to the primary coil 229, and the other end is connected to the high frequency power driver 221. In the coil mounter 220, when the buffer member 224 is pushed from the outside, the spring 233 is elastically deformed, and the spring housing case 232 and the power transmission coil unit 223 move integrally.

  Here, in a state where no external force is applied to the buffer member 224, a gap is formed between the opening edge of the opening 234 and the outer peripheral surface of the tube 235, and the spring housing case 232 and the power transmission The coil unit 223 is movable in the horizontal direction. Therefore, the spring housing case 232 and the power transmission coil unit 223 are movable in the width direction of the vehicle 100 shown in FIG.

  FIG. 6 is a cross-sectional view of the power transmission coil unit 223 and the buffer member 224. As shown in FIG. 6, a capacitor 237 is accommodated in the bobbin 228, and the capacitor 237 is connected to the primary self-resonant coil 230. The cable 236 is drawn out into the bobbin 228, and the cable 236 is connected to the primary coil 229 mounted on the outer peripheral surface of the bobbin 228.

  FIG. 7 is a side sectional view of power receiving coil unit 110 mounted on vehicle 100. As shown in FIG. 7, the power receiving coil unit 110 includes a resin case 114, a cylindrical bobbin 115 provided in the resin case 114, a secondary coil 116 attached to the outer peripheral surface of the bobbin 115, and two A secondary self-resonant coil 117 and a resin case 114 are included.

  The secondary self-resonant coil 117 and the secondary coil 116 are provided at an interval in the height direction, and the secondary coil 116 is disposed above the secondary self-resonant coil 117. The shield material 118 is provided on the upper surface and the inner peripheral surface of the inner surface of the resin case 114. FIG. 8 is a cross-sectional view of the power receiving coil unit 110. As shown in FIG. 8, a capacitor 119 is disposed in the bobbin 115, and the capacitor 119 is connected to the secondary self-resonant coil 117. Yes.

  FIG. 9 is a schematic diagram for explaining a power transmission principle for transmitting power from the power supply facility 200 to the vehicle 100. In FIG. 9, the configuration is simplified in order to explain the power transmission principle. In the present embodiment, a power transmission method using a resonance method is employed. In this resonance method, in the same way as two tuning forks resonate, two LC resonance coils having the same natural frequency resonate in an electromagnetic field (near field), thereby causing an electromagnetic field to pass from one coil to the other coil. Power is transmitted.

  Specifically, the primary coil 229 is connected to the AC power source 222 via a high frequency power driver, and high frequency power of 1 M to 10 and several MHz is applied to the primary self-resonant coil 230 that is magnetically coupled to the primary coil 229 by electromagnetic induction. Supply power. The primary self-resonant coil 230 is an LC resonator having an inductance and stray capacitance of the coil itself, and resonates with a secondary self-resonant coil 117 having the same resonance frequency as the primary self-resonant coil 230 via an electromagnetic field (near field). . Then, energy (electric power) moves from the primary self-resonant coil 230 to the secondary self-resonant coil 117 via the electromagnetic field. The energy (power) transferred to the secondary self-resonant coil 117 is taken out by the secondary coil 116 magnetically coupled to the secondary self-resonant coil 117 by electromagnetic induction and supplied to the battery 150. Note that power transmission by the resonance method is realized when the Q value indicating the resonance intensity between the primary self-resonant coil 230 and the secondary self-resonant coil 117 is greater than 100, for example.

  FIG. 10 is a diagram showing the relationship between the distance from the current source (magnetic current source) and the intensity of the electromagnetic field. Referring to FIG. 10, the electromagnetic field includes three components. The curve k1 is a component that is inversely proportional to the distance from the wave source, and is referred to as a “radiated electromagnetic field”. A curve k2 is a component inversely proportional to the square of the distance from the wave source, and is referred to as an “induction electromagnetic field”. The curve k3 is a component inversely proportional to the cube of the distance from the wave source, and is referred to as an “electrostatic magnetic field”.

  Among these, there is a region where the intensity of the electromagnetic wave rapidly decreases with the distance from the wave source. In the resonance method, energy (electric power) is transmitted using this near field (evanescent field). That is, by using a near field to resonate a pair of resonators (for example, a pair of LC resonance coils) having the same natural frequency, one resonator (primary self-resonant coil) and the other resonator (two Energy (electric power) is transmitted to the next self-resonant coil. Since this near field does not propagate energy (electric power) far away, the resonance method transmits power with less energy loss than electromagnetic waves that transmit energy (electric power) by "radiation electromagnetic field" that propagates energy far away. be able to.

  FIG. 11 is a detailed configuration diagram of vehicle 100 shown in FIG. Referring to FIG. 11, vehicle 100 includes a battery 150, a system main relay SMR1, a boost converter 162, inverters 164 and 166, motor generators 172 and 174, an engine 176, a power split device 177, and a drive. Ring 178. Vehicle 100 further includes a secondary self-resonant coil 117, a secondary coil 116, a rectifier 140, a DC / DC converter 142, a system main relay SMR2, and a voltage sensor 190. Further, vehicle 100 further includes a control device 180.

  The vehicle 100 is equipped with an engine 176 and a motor generator 174 as power sources. Engine 176 and motor generators 172 and 174 are connected to power split device 177. Vehicle 100 travels with a driving force generated by at least one of engine 176 and motor generator 174. The power generated by the engine 176 is divided into two paths by the power split device 177. That is, one is a path transmitted to the drive wheel 178 and the other is a path transmitted to the motor generator 172.

Motor generator 172 is an AC rotating electric machine, and includes, for example, a three-phase AC synchronous motor in which a permanent magnet is embedded in a rotor. Motor generator 172 generates power using the kinetic energy of engine 176 divided by power split device 177. For example, when the state of charge of battery 150 (also referred to as “SOC (State Of Charge)”) becomes lower than a predetermined value, engine 176 is started and motor generator 172 generates power, and battery 150 Is charged.

  The motor generator 174 is also an AC rotating electric machine, and is composed of, for example, a three-phase AC synchronous motor in which a permanent magnet is embedded in a rotor, like the motor generator 172. Motor generator 174 generates a driving force using at least one of the electric power stored in battery 150 and the electric power generated by motor generator 172. Then, the driving force of motor generator 174 is transmitted to driving wheel 178.

Further, when braking the vehicle or reducing acceleration on the down slope, the mechanical energy stored in the vehicle as kinetic energy or positional energy is used for rotational driving of the motor generator 174 via the drive wheels 178, and the motor generator 174 is Operates as a generator. Thus, motor generator 174 operates as a regenerative brake that converts running energy into electric power and generates braking force. The electric power generated by motor generator 174 is stored in battery 150.

  Power split device 177 includes a planetary gear including a sun gear, a pinion gear, a carrier, and a ring gear. The pinion gear engages with the sun gear and the ring gear. The carrier supports the pinion gear so as to be able to rotate and is coupled to the crankshaft of the engine 176. The sun gear is coupled to the rotation shaft of motor generator 172. The ring gear is connected to the rotation shaft of motor generator 174 and drive wheel 178.

  The battery 150 is a rechargeable DC power source, and is composed of, for example, a secondary battery such as lithium ion or nickel metal hydride. Battery 150 stores electric power supplied from DC / DC converter 142 and also stores regenerative electric power generated by motor generators 172 and 174. Battery 150 supplies the stored power to boost converter 162. Note that a large-capacity capacitor can also be used as the battery 150, and temporarily stores the power supplied from the power supply facility 200 (FIG. 1) and the regenerative power from the motor generators 172 and 174, and the stored power is used as a boost converter. Any power buffer that can be supplied to 162 may be used.

  System main relay SMR1 is arranged between battery 150 and boost converter 162. The system main relay SMR1 electrically connects the battery 150 to the boost converter 162 when the signal SE1 from the control device 180 is activated, and the battery 150 and the boost converter 162 when the signal SE1 is deactivated. Break the electrical circuit between. Boost converter 162 boosts the voltage on positive line PL <b> 2 to a voltage equal to or higher than the voltage output from battery 150 based on signal PWC from control device 180. Boost converter 162 is formed of a DC chopper circuit, for example. Inverters 164 and 166 are provided corresponding to motor generators 172 and 174, respectively. Inverter 164 drives motor generator 172 based on signal PWI 1 from control device 180, and inverter 166 drives motor generator 174 based on signal PWI 2 from control device 180. Inverters 164 and 166 are formed of, for example, a three-phase bridge circuit.

  The secondary self-resonant coil 117 is an LC resonant coil, and receives power from the power supply facility 200 by resonating with the primary self-resonant coil of the power supply facility 200 via an electromagnetic field. The capacitance component of the secondary self-resonant coil 117 is a capacitor connected to both ends of the coil. Regarding the secondary self-resonant coil 117, the primary self-resonant coil and the secondary self-resonant coil are determined based on the distance from the primary self-resonant coil of the power supply facility 200, the resonance frequency of the primary self-resonant coil and the secondary self-resonant coil 117, and the like. The number of turns is appropriately set so that the Q value (for example, Q> 100) indicating the resonance intensity with the resonance coil 117 and κ indicating the degree of coupling increase.

  The secondary coil 116 is disposed coaxially with the secondary self-resonant coil 117 and can be magnetically coupled to the secondary self-resonant coil 117 by electromagnetic induction. The secondary coil 116 takes out the electric power received by the secondary self-resonant coil 117 by electromagnetic induction and outputs it to the rectifier 140.

The rectifier 140 rectifies the AC power extracted by the secondary coil 116. DC / DC converter 142 converts the power rectified by rectifier 140 into a voltage level of battery 150 based on signal PWD from control device 180 and outputs the voltage to battery 150. System main relay SMR <b> 2 is arranged between DC / DC converter 142 and battery 150. System main relay SMR2 electrically connects battery 150 to DC / DC converter 142 when signal SE2 from control device 180 is activated, and connects battery 150 to DC / DC when signal SE2 is deactivated. The electric circuit between the DC converter 142 is cut off. Voltage sensor 190 detects voltage VH between rectifier 140 and DC / DC converter 142 and outputs the detected value to control device 180.

  Control device 180 generates signals PWC, PWI1, and PWI2 for driving boost converter 162 and motor generators 172 and 174, respectively, based on the accelerator opening, vehicle speed, and other signals from various sensors. The signals PWC, PWI1, and PWI2 are output to boost converter 162 and inverters 164 and 166, respectively. When the vehicle travels, control device 180 activates signal SE1 to turn on system main relay SMR1, and deactivates signal SE2 to turn off system main relay SMR2.

  FIG. 12 is a schematic plan view showing a state when the vehicle 100 is parked in the parking space of the power supply facility 200.

  A suspension 238 is provided at the rear of the vehicle 100, and the suspension 238 is provided at intervals in the width direction of the vehicle, and between the buffer unit 239 disposed near each rear wheel 101 and the buffer unit 239. And a torsion bar 240 arranged in The buffer unit 239 includes a coil spring, a damper, and the like. On the lower surface of the vehicle 100, buffer members 250 </ b> A and 250 </ b> B provided on the peripheral surface of the buffer unit 239 and buffer members 251 provided on the torsion bar 240 are provided. The power receiving coil unit 110 is disposed on the rear side of the vehicle 100 and at the center in the width direction of the vehicle 100.

  When the guide plates 112A and 112B and the power receiving coil unit 110 are viewed from above, the guide plate 112A and the guide plate 112B are disposed on both sides of the power receiving coil unit 110, and the power receiving coil unit 110 is the guide plate 112A. And the central portion between the guide plates 112B.

  The guide plate 112A and the guide plate 112B are formed such that the distance L in the width direction of the vehicle 100 between the guide plate 112A and the guide plate 112B increases from the front side to the rear side of the vehicle 100. That is, the guide plate 112A and the guide plate 112B are disposed so as to be widened toward the end. Note that the distance between the end of the guide plate 112A located on the front side of the vehicle 100 and the end of the guide plate 112B located on the front side is greater than the outer diameter of the buffer member 224 or the outer diameter of the buffer member 224. Is a little bigger.

  When the coil mounter 220 guided below the vehicle 100 by the guide plates 112A and 112B comes into contact with at least one of the buffer members 250A and 250B and the buffer member 251, the power transmission coil unit 223 of the coil mounter 220 receives power. It is located in the charging area R located below the coil unit 110 for use. That is, the guide plates 112A and 112B guide the power transmission coil unit 223 into the charging area R, and the buffer members 250A and 250B and the buffer member 251 guide the power transmission coil unit 223 guided by the guide plates 112A and 112B. Position in R.

  In FIG. 12 and FIG. 1 described above, the vehicle 100 enters the parking space of the power supply facility 200 while moving backward. In FIG. 12, a coil mounter 220A indicates a coil mounter when the vehicle 100 starts to enter a parking space.

  In the example shown in FIG. 12, the vehicle 100 is displaced in the lateral direction, and the coil mounter 220 and the power receiving coil unit 110 are arranged in the width direction of the vehicle 100 even if the vehicle 100 moves backward in the backward direction B. Shift.

  Thereafter, as shown in FIG. 13, when the vehicle 100 further enters the parking space, the vehicle 100 and the coil mounter 220 further approach each other.

  The coil mounter 220B is a coil mounter that comes into contact with one guide plate 112A. At this time, the buffer member 224B of the coil mounter 220B comes into contact with the end portion on the vehicle rear side of the guide plate 112A. Then, as shown in FIG. 14, when the vehicle 100 further advances in the backward direction B, the buffer member 224C and the power transmission coil unit 223C are guided below the power reception coil unit 110 by the guide plate 112A. As shown in FIG. 5, the power transmission coil unit 223 is provided to be movable in the horizontal plane direction, and is provided to be movable at least in the width direction of the vehicle 100. In addition, the width direction of the vehicle 100 here means the width direction of the vehicle 100 in a state where power can be favorably received as shown in FIG.

  As shown in the coil mounter 220C in the figure, when the buffer member 224C and the buffer member 251 are in contact, the power transmission coil unit 223C of the coil mounter 220C is positioned below the power receiving coil unit 110. At this time, as shown in FIG. 1, the rear wheel 101 hits the wheel stop 201 and the vehicle 100 stops moving backward.

  The coil mounter 220 is positioned in the charging area R by contacting at least one of the buffer members 250 </ b> A and 250 </ b> B and the buffer member 251 with the buffer member 224 of the coil mounter 220.

  Thus, even if the vehicle 100 enters the parking space of the power supply facility 200 with the position shifted, the guide plates 112A and 112B guide the power transmission coil unit 223 to the charging area R of the power reception coil unit 110.

  Therefore, as a work before charging, the work load of operating the vehicle 100 so that the power receiving coil unit 110 (secondary self-resonant coil 117) and the power transmitting coil unit 223A (primary self-resonant coil 230) face each other is reduced. Therefore, it is possible to reduce the work burden on the driver.

  The buffer members 250 </ b> A and 250 </ b> B and the buffer member 251 are made of an elastically deformable resin and the like, and suppress damage to the coil mounter 220 when coming into contact with the coil mounter 220.

  The guide plate 112 </ b> A is disposed behind the one rear wheel 101, and the guide plate 112 </ b> B is also disposed behind the other rear wheel 101.

  For this reason, the guide plates 112 </ b> A and 112 </ b> B catch mud and the like scattered from the rear wheel 101. Thus, the guide plates 112A and 112B also function as mudguards.

  Furthermore, the guide plate 112A and the guide plate 112B rectify the flow of air flowing on the lower surface of the vehicle 100, and improve stability and comfort during high-speed traveling. In particular, it is possible to suppress the air flowing on the lower surface of the vehicle 100 from being released to the side of the vehicle 100 and to prevent the airflow from being disturbed.

  FIG. 15 is a plan view of the guide plates 112A and 112B. As shown in FIG. 15, the guide plate 112 </ b> A includes a piece 120 and a piece 121 located on the rear side of the vehicle 100 with respect to the piece 120. In FIG. 14, virtual lines L <b> 1 and L <b> 2 are virtual lines extending in the width direction of the vehicle 100.

  The guide plate 112A is formed so that the angle θ1 formed by the imaginary line L2 and the piece 121 is smaller than the angle θ2 formed by the imaginary line L1 and the piece 120. Guide plate 112 </ b> B includes a piece 122 and a piece 123 provided on the rear side of vehicle 100 with respect to piece 122.

  The angle θ3 formed by the piece portion 123 and the virtual line L2 is smaller than the angle θ4 formed by the piece portion 122 and the virtual line L1.

  For this reason, the distance between the edge part of the piece part 121 and the edge part of the piece part 123 becomes long, and it is easy to receive the coil mounting device 220. FIG. Then, after the pieces 121 and 123 are caught by the coil mounter 220, the pieces 120 and 122 guide the coil mounter 220. The shape of the guide plates 112 </ b> A and 112 </ b> B is not limited to the above shape, and may be any shape that spreads toward the rear of the vehicle 100.

  In the present embodiment, the example in which power receiving coil unit 110 is disposed rearward of the central portion in the front-rear direction of vehicle 100 has been described, but may be disposed forward of the central portion. In this case, the guide plates 112A and 112B are disposed on the front side of the power receiving coil unit 110, and the distance between the guide plate 112A and the guide plate 112B is formed so as to increase toward the front side of the vehicle 100. The

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above description of the embodiments but by the scope of claims for patent, and is intended to include meanings equivalent to the scope of claims for patent and all modifications within the scope.

  The present invention can be applied to a vehicle, and is particularly suitable for a vehicle that can receive power from an external coil unit via an electromagnetic field.

  100 vehicle, 101 rear wheel, 110 power receiving coil unit, 111 rear floor panel, 112A, 112B guide plate, 113 guide portion, 114 resin case, 115 bobbin, 116 secondary coil, 117 secondary self-resonant coil, 118 shield material, 119 Capacitor, 140 Rectifier, 142 Converter, 150 Battery, 162 Boost converter, 164,166 Inverter, 172,174 Motor generator, 176 Engine, 177 Power split device, 178 Drive wheel, 180 Controller, 190 Voltage sensor, 200 Power supply equipment , 201 Ring stop, 202 White line, 220 Coil mounter, 221 High frequency power driver, 222 AC power supply, 223 Coil unit for power transmission, 224 Buffer member, 225 Support base, 226 Wheel, 22 Resin case, 228 bobbin, 229 primary coil, 230 primary self-resonant coil, 231 shield material, 232 spring housing case, 233 spring, 234 opening, 235 tube, 236 cable, 237 capacitor, 238 suspension, 239 buffer unit, 240 Torsion bar, 250 cushioning member.

Claims (5)

A power receiving coil disposed on the bottom surface of the vehicle, capable of receiving power in a non-contact state with a power transmitting coil installed outside the vehicle;
A guide portion provided on the bottom surface of the vehicle;
A vehicle equipped with
The power transmission coil is located below the bottom surface and is provided so as to be movable at least in the width direction of the vehicle.
The guide unit is a vehicle that guides the power transmission coil into a predetermined range located below the power reception coil. A first rear wheel and a second rear wheel that are spaced apart from each other in the width direction of the vehicle;
2. The vehicle according to claim 1, wherein the guide portion includes a first guide plate provided behind the first rear wheel and a second guide plate provided rearward of the second rear wheel. .   The said 1st guide plate and the said 2nd guide plate are formed so that the distance of the width direction of the said vehicle of the said 1st guide plate and the said 2nd guide plate may become large toward the back of a vehicle. 2. The vehicle according to 2.   The vehicle according to any one of claims 1 to 3, further comprising a positioning member that positions the power transmission coil guided by the guide portion within the predetermined range.   The vehicle according to claim 4, wherein the positioning member is a buffer member.

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