WO2013168242A1 - 車両 - Google Patents
車両 Download PDFInfo
- Publication number
- WO2013168242A1 WO2013168242A1 PCT/JP2012/061831 JP2012061831W WO2013168242A1 WO 2013168242 A1 WO2013168242 A1 WO 2013168242A1 JP 2012061831 W JP2012061831 W JP 2012061831W WO 2013168242 A1 WO2013168242 A1 WO 2013168242A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- coil
- power
- unit
- winding axis
- power transmission
- Prior art date
Links
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Images
Classifications
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- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
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- B60L50/10—Electric propulsion with power supplied within the vehicle using propulsion power supplied by engine-driven generators, e.g. generators driven by combustion engines
- B60L50/16—Electric propulsion with power supplied within the vehicle using propulsion power supplied by engine-driven generators, e.g. generators driven by combustion engines with provision for separate direct mechanical propulsion
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- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
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- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
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- B60L58/40—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for controlling a combination of batteries and fuel cells
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/14—Inductive couplings
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
- H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
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- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/40—Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices
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- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0042—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction
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- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
- B60K2001/0405—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion characterised by their position
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2210/00—Converter types
- B60L2210/40—DC to AC converters
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2250/00—Driver interactions
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- H—ELECTRICITY
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Definitions
- the present invention relates to a vehicle capable of receiving power without contact.
- a vehicle described in Japanese Patent Application Laid-Open Nos. 2010-172084 and 2011-49230 includes a primary side core and a primary side coil wound around the primary side core.
- the vehicle described in Japanese Patent Application Laid-Open No. 2011-193671 also includes a power receiving unit that receives power from a power transmitting unit provided outside.
- a vehicle as described above generally has a plurality of electronic devices.
- an electromagnetic field is generated around the power reception unit.
- the electronic device is greatly influenced by the electromagnetic field formed around the power receiving unit.
- the present invention has been made in view of the problems as described above, and its purpose is to reduce the influence on an electronic device mounted on a vehicle when power is transmitted between a power transmission unit and a power reception unit. It is to provide a vehicle in which
- the vehicle according to the present invention includes a power receiving unit and an electronic device that receive power in a non-contact manner from a power transmitting unit provided outside.
- the power receiving unit includes a coil formed so as to surround the periphery of the winding shaft.
- the region where the electric device is disposed is located in a direction different from the direction in which the winding axis extends from the coil.
- an opening is formed at the end of the coil. If the region extending in the direction in which the winding axis extends from the opening of the coil when the coil is viewed from above the vehicle is an adjacent region, the electric device is arranged in a region different from the adjacent region.
- the electronic device provided at a position away from the adjacent region is any one of a battery capable of storing electric power, a PCU (Power Control Unit) connected to the battery, and a rotating electrical machine connected to the PCU. It is.
- a battery capable of storing electric power
- a PCU Power Control Unit
- the coil is arranged such that the winding axis extends in the width direction of the vehicle.
- the electronic device is disposed on the front side or the rear side of the vehicle with respect to the coil.
- the apparatus further includes an adjacent device at least a part of which is located in the adjacent region when viewed from above the vehicle. The number of electronic components that the adjacent device has is smaller than the number of electronic components that the electronic device has.
- the electronic device includes a battery capable of storing electric power.
- the adjacent device includes a storage unit capable of storing energy other than electric power, a first connection unit connected to the storage unit and connected to a supply unit supplying energy, and a power supply unit connected to the battery and supplying power Any one of the second connection portions to be connected.
- the coil is arranged such that the winding axis extends in the horizontal direction.
- the winding axis includes a first winding axis and a second winding axis in a direction different from the first winding axis.
- the coil includes a first coil formed so as to surround the first winding axis, and a second coil formed so as to surround the second winding axis.
- the adjacent region includes a first adjacent region extending in a direction in which the second winding axis extends from the first coil, and a second adjacent region extending in the direction in which the second winding axis extends from the second coil.
- the difference between the natural frequency of the power transmission unit and the natural frequency of the power reception unit is 10% or less of the natural frequency of the power reception unit.
- the coupling coefficient between the power reception unit and the power transmission unit is 0.1 or less.
- the power reception unit includes a magnetic field that is formed between the power reception unit and the power transmission unit and vibrates at a specific frequency, and an electric field that is formed between the power reception unit and the power transmission unit and vibrates at a specific frequency. Power is received from the power transmission unit through at least one of them.
- the vehicle according to the present invention includes a power receiving unit including a coil that receives power in a non-contact manner from a power transmitting unit provided outside, and an electronic device.
- An electromagnetic field formed by transmitting power between the power reception unit and the power transmission unit is more widely distributed from the coil in a second direction different from the first direction than in the first direction.
- the electronic device is disposed in a region located in a direction different from the second direction from the coil.
- the vehicle according to the present invention it is possible to reduce the influence of an electronic device mounted on the vehicle from an electromagnetic field generated by power transmission.
- FIG. 2 is a side view showing a left side surface of electric vehicle 10.
- FIG. 2 is a side view showing a right side surface of the electric vehicle 10.
- FIG. 1 is a front view of an electric vehicle 10.
- FIG. 2 is a rear view of the electric vehicle 10.
- FIG. 1 is a plan view of an electric vehicle 10.
- FIG. 2 is a bottom view of the electric vehicle 10.
- FIG. 1 is a plan view schematically showing an electric vehicle 10 when the electric vehicle 10 is viewed from above the electric vehicle 10.
- FIG. 2 is a cross-sectional view showing a power receiving device 11.
- FIG. 2 is an exploded perspective view of a power receiving device 11.
- FIG. 3 is an exploded perspective view showing a fixing member 27 and a ferrite core 21.
- FIG. 2 is a perspective view showing a secondary coil 22.
- FIG. It is the top view which planarly viewed the secondary coil.
- It is a perspective view which shows the coil 200 as a model. It is a side view which shows a mode that the coil 200 was divided into the some micro part dp. It is a front view which shows a mode that the coil 200 was divided into the some micro part dp.
- 6 is a graph showing the relationship between the power transmission efficiency when the air gap AG is changed and the frequency f3 of the current supplied to the primary coil 58 when the natural frequency f0 is fixed. It is the figure which showed the relationship between the distance from an electric current source or a magnetic current source, and the intensity
- FIG. 3 is a plan view showing a power receiving unit 20.
- FIG. FIG. 28 is a cross-sectional view taken along line XXVIII-XXVIII shown in FIG. 27.
- 3 is a perspective view showing a power reception unit 20 and a power transmission unit 56.
- FIG. 2 is a plan view schematically showing a power reception unit 20.
- FIG. 2 is a perspective view schematically showing a power reception unit 20 and a power transmission unit 56.
- FIG. 2 is a perspective view schematically showing a power reception unit 20 and a power transmission unit 56.
- FIG. 6 is a plan view illustrating a modification of the power reception unit 20.
- FIG. It is a perspective view which shows a mode when electric power transmission is carried out between the power receiving part 20 shown in FIG. 34 and this power receiving part 20 and the power transmission part 56 of the same kind.
- It is a perspective view which shows a mode when electric power transmission is carried out between the power receiving part 20 shown in FIG. 34 and the type power transmission part 56 different from the said power receiving part 20.
- FIG. It is a top view which shows typically the electric vehicle 10 which concerns on this Embodiment 4.
- FIG. 10 is a plan view schematically showing an electrically powered vehicle 10 according to a fifth embodiment.
- FIG. 10 is a left side view showing an electrically powered vehicle 10 according to a sixth embodiment.
- 4 is a perspective view showing a layout of a battery 15, a power receiving unit 20, and a fuel tank 79.
- FIG. 1 is a schematic diagram schematically showing a power reception device, a power transmission device, and a power transmission system according to the first embodiment.
- the power transmission system includes the electric vehicle 10 including the power receiving device 11 and the external power feeding device 51 including the power transmission device 50.
- the electric vehicle 10 stops at a predetermined position of the parking space 52 where the power transmission device 50 is provided, and the power reception device 11 receives power from the power transmission device 50.
- the parking space 52 is provided with a line indicating a stop, a parking position, and a parking range so that the electric vehicle 10 stops at a predetermined position.
- the external power supply device 51 includes a high-frequency power driver 54 connected to the AC power source 53, a control unit 55 that controls driving of the high-frequency power driver 54 and the like, and a power transmission device 50 connected to the high-frequency power driver 54.
- the power transmission device 50 includes a power transmission unit 56.
- the power transmission unit 56 includes a ferrite core 57, a primary coil (resonance coil) 58 wound around the ferrite core 57, and a capacitor 59 connected to the primary coil 58. Including.
- the capacitor 59 is not an essential configuration.
- the primary coil 58 is connected to the high frequency power driver 54.
- the primary coil 58 and the capacitor 59 may be connected so as to be connected in parallel to the high frequency power driver 54, and the primary coil 58 and the capacitor 59 are connected in series to the high frequency power driver 54. You may connect.
- the power transmission unit 56 includes an electric circuit formed by the inductance of the primary coil 58, the stray capacitance of the primary coil 58, and the capacitance of the capacitor 59.
- the electric vehicle 10 includes a power receiving device 11 and an electric device module 100.
- the electric device module 100 includes a rectifier 13 connected to the power receiving device 11, a DC / DC converter 14 connected to the rectifier 13, a battery 15 connected to the DC / DC converter 14, and a power control unit (PCU). (Power Control Unit) 16, a motor unit 17 connected to the power control unit 16, a vehicle ECU (Electronic Control Unit) 12 that controls driving of the DC / DC converter 14, the power control unit 16, and the like, and a camera 33 and a display unit 34.
- the electric device module 100 includes a plurality of electronic devices as described above.
- the electric equipment module 100 illustrated the power receiving electronic equipment including the rectifier 13 and the converter 14, and the hybrid electronic equipment including the battery 15, the power control unit 16, and the motor unit 17, It does not exclude including other electronic devices.
- a door opening / closing sensor that senses opening / closing of a door
- a load sensor that senses a load applied to a seat, and the like can be given.
- the electronic device included in the electric device module 100 includes wiring.
- the electric vehicle 10 is a hybrid vehicle including an engine (not shown), but includes a fuel cell vehicle and an electric vehicle as long as the vehicle is driven by a motor.
- the rectifier 13 is connected to the power receiving device 11, converts an alternating current supplied from the power receiving device 11 into a direct current, and supplies the direct current to the DC / DC converter 14.
- the DC / DC converter 14 adjusts the voltage of the direct current supplied from the rectifier 13 and supplies it to the battery 15.
- the DC / DC converter 14 is not an essential component and may be omitted. In this case, the DC / DC converter 14 can be substituted by providing a matching unit for matching impedance with the external power feeding device 51 between the power transmission device 50 and the high frequency power driver 54.
- the power control unit 16 includes a converter connected to the battery 15 and an inverter connected to the converter, and the converter adjusts (boosts) the direct current supplied from the battery 15 and supplies the DC current to the inverter.
- the inverter converts the direct current supplied from the converter into an alternating current and supplies it to the motor unit 17.
- the motor unit 17 employs, for example, a three-phase AC motor and is driven by an AC current supplied from an inverter of the power control unit 16.
- the electric vehicle 10 further includes an engine or a fuel cell.
- the motor unit 17 includes a motor generator that mainly functions as a generator and a motor generator that mainly functions as an electric motor.
- the camera 33 images the power transmission unit 56 provided on the ground side, and sends the captured information to the vehicle ECU 12.
- the vehicle ECU 12 displays an image captured by the camera 33 on the display unit 34.
- the power receiving device 11 includes a power receiving unit 20.
- the power receiving unit 20 includes a ferrite core 21, a secondary coil 22 wound around the outer peripheral surface of the ferrite core 21, and a capacitor 23 connected to the secondary coil 22.
- the capacitor 23 is not an essential component.
- the secondary coil 22 is connected to the rectifier 13. Note that the capacitor 23 and the secondary coil 22 may be connected to the rectifier 13 in parallel, or the capacitor 23 and the secondary coil 22 may be connected to the rectifier 13 in series.
- the secondary coil 22 has a stray capacitance. For this reason, the power receiving unit 20 has an electric circuit formed by the inductance of the secondary coil 22 and the capacitances of the secondary coil 22 and the capacitor 23.
- the capacitor 23 is not an essential configuration and can be omitted.
- FIG. 2 is a side view showing the left side surface of the electric vehicle 10.
- FIG. 3 is a side view showing the right side surface of the electric vehicle 10.
- FIG. 4 is a front view of the electric vehicle 10.
- FIG. 5 is a rear view of the electric vehicle 10.
- FIG. 6 is a plan view of the electric vehicle 10.
- FIG. 7 is a bottom view of the electric vehicle 10.
- the electric vehicle 10 includes a vehicle main body 70 and a front wheel 18L and a rear wheel 19L provided on the vehicle main body 70.
- a driving chamber 80 in which the motor unit 17, the engine, and the like are accommodated
- an occupant accommodating chamber 81 disposed behind the driving chamber 80 in the traveling direction of the electric vehicle 10
- the occupant accommodating chamber 81 A luggage compartment 68 is also formed on the rear side in the traveling direction.
- a passenger opening / closing opening 82 ⁇ / b> L communicating with the passenger accommodation chamber 81 is formed on the left side surface 71 of the electric vehicle 10.
- the vehicle main body 70 is disposed at a door 83L for opening and closing the entrance opening 82L, a front fender 84L disposed on the front side in the advancing direction with respect to the entrance opening 82L, and disposed on the front side in the advancing direction with respect to the front fender 84.
- the vehicle body 70 includes a rear fender 85L disposed on the rear side in the traveling direction from the opening 82L for getting on and off, and a rear bumper 87 disposed on the rear side in the traveling direction from the rear fender 85L.
- the right side surface 72 of the electric vehicle 10 is formed with a passenger opening / closing opening 82 ⁇ / b> R that communicates with the passenger compartment 81.
- the vehicle body 70 is disposed at a door 83R that opens and closes the entrance / exit opening portion 82R, a front fender 84R disposed on the front side in the advancing direction with respect to the entrance port 82R, and on the rear side in the advancing direction with respect to the opening portion 82R.
- Rear fender 85R In FIG.
- the vehicle body 70 includes an engine roof 88 that opens and closes the drive chamber 80, a roof 66 that defines the upper surface of the passenger compartment 81, and a hatch 67 that opens and closes an opening formed in the luggage compartment 68.
- the hatch 67 includes an upper surface portion 67a and a back surface portion 67b.
- the left side surface 71 of the electric vehicle 10 is visible when the electric vehicle 10 is viewed from a position away from the left side of the electric vehicle 10 in the width direction of the electric vehicle 10. Surface.
- the left side surface 71 of the electric vehicle 10 is mainly defined by the side portion of the front bumper 86, the front fender 84L, the door 83L, the rear fender 85L, and the side portion of the rear bumper 87.
- the right side surface 72 of the electric vehicle 10 is visible when the electric vehicle 10 is viewed from a position in the width direction of the electric vehicle 10 and away from the right side of the electric vehicle 10 as shown in FIG. 3.
- Surface. Therefore, the right side surface 72 of the electric vehicle 10 is mainly defined by the side part of the front bumper 86, the front fender 84R, the door 83R, the rear fender 85R, and the side part of the rear bumper 87.
- the front surface 73 of the electric vehicle 10 is a surface that is visible when the electric vehicle 10 is viewed from a position away from the electric vehicle 10 in the traveling direction front side.
- the front surface 73 of the electric vehicle 10 is mainly defined by the front portion of the front bumper 86 and the members provided between the engine roof 88 and the front bumper 86.
- the back surface 74 of the electric vehicle 10 is a surface that is visible when the electric vehicle 10 is viewed from a position away from the electric vehicle 10 on the rear side in the traveling direction.
- the back surface 74 of the electric vehicle 10 is mainly defined by the back surface portion of the rear bumper 87 and the back surface portion 67 b of the hatch 67.
- the upper surface 75 of the electric vehicle 10 is a surface that can be seen when the electric vehicle 10 is viewed from a position vertically away from the ground when the tire of the electric vehicle 10 is in contact with the ground. It is.
- the upper surface 75 of the electric vehicle 10 is mainly defined by the engine roof 88, the roof 66, and the upper surface portion 67 a of the hatch 67.
- the bottom surface 76 of the electric vehicle 10 is a surface that can be seen when the electric vehicle 10 is viewed from a position vertically below the ground in a state where the tire of the electric vehicle 10 is in contact with the ground. It is.
- the power receiving device 11 is provided on the bottom surface 76 side of the electric vehicle 10.
- electrically powered vehicle 10 includes side members 47 arranged in the width direction of the vehicle and a plurality of cross members provided so as to connect side members 47, and power receiving device 11 is connected to side members 47 and cross members. You may make it suspend.
- the electric vehicle 10 may include a floor panel 49 and the power receiving device 11 may be fixed to the floor panel 49. Note that “disposing the power receiving device 11 on the bottom surface 76 side” does not necessarily have to be provided at a position where the power receiving device 11 is visible when the electric vehicle 10 is viewed from below the electric vehicle 10.
- FIG. 8 is a plan view schematically showing the electric vehicle 10 when the electric vehicle 10 is viewed from above the electric vehicle 10.
- the electric vehicle 10 includes an oil supply portion (second connection portion) 77 provided on the right side surface 72, a charging portion (first connection portion) 78 provided on the left side surface 71, and an oil supply portion 77. And a fuel tank 79 connected by piping or the like. Electric vehicle 10 includes an oil supply unit 77, a charging unit 78, and a fuel tank 79 as devices adjacent to power reception unit 20.
- a connection part means at least one of the oil supply part (connection part) 77 and the charging part (connection part) 78.
- the oil supply unit 77 is provided in the rear fender 85L, and the charging unit 78 is provided in the rear fender 85R.
- An oil supply plug provided in the oil supply device is connected to the oil supply unit 77.
- the fuel supply plug (fuel supply unit) supplies fuel such as gasoline and liquid hydrogen to the fuel supply unit 77, and the fuel supplied to the fuel supply unit 77 is supplied to the fuel tank 79. That is, the energy supplied from the fuel supply unit 77 is energy different from electric power, and is fuel such as gasoline or a hydrogen compound containing a hydrogen element.
- the charging unit 78 is connected to the battery 15, and between the charging unit 78 and the battery 15, wiring and a converter that converts an alternating current supplied from the charging unit 78 into a direct current are provided. Yes.
- a charging plug provided in the charging device is connected to the charging unit 78.
- the charging plug (power supply unit) supplies power to the charging unit 78.
- the alternating current supplied to the charging unit 78 is converted into a direct current and stored in the battery 15.
- the power receiving unit 20 is provided in a portion of the bottom surface 76 located below the luggage compartment 68.
- the fuel tank 79 includes a main body 79a provided on the front side of the electric vehicle 10 with respect to the power receiving unit 20, and an auxiliary tank 79b extending from the main body 79a between the rear wheel 19R and the power receiving unit 20.
- the rectifier 13 is disposed on the front side of the electric vehicle 10 with respect to the power receiving unit 20.
- Converter 14 is located on the front side of electric vehicle 10 with respect to power reception unit 20.
- the battery 15 is provided on the front side of the electric vehicle 10 with respect to the power receiving unit 20.
- the power control unit 16 and the motor unit 17 are also located on the front side of the power receiving unit 20.
- the power receiving unit 20 and the rectifier 13 are connected by a wiring 19a.
- the rectifier 13 and the converter 14 are connected by a wiring 19b.
- the converter 14 and the battery 15 are connected by a wiring 19c.
- the battery 15 and the power control unit 16 are connected by a wiring 19d, and the power control unit 16 and the motor unit 17 are connected by a wiring 19e.
- the camera 33 is provided on the back surface 74 and is disposed behind the electric vehicle 10 with respect to the power receiving unit 20.
- FIG. 9 is a cross-sectional view showing the power receiving device 11, and FIG. 10 is an exploded perspective view of the power receiving device 11.
- the power receiving device 11 includes a power receiving unit 20 and a casing 24 that houses the power receiving unit 20.
- the housing 24 includes a shield 25 formed so as to open downward, and a lid portion 26 provided so as to close the opening of the shield 25.
- the shield 25 includes a top plate portion 25a and a peripheral wall portion 25b formed so as to hang downward from the peripheral edge portion of the top plate portion 25a.
- the peripheral wall portion 25b includes a plurality of wall portions 25c to 25f, and the plurality of wall portions 25c to 25f are connected to each other to form an annular peripheral wall portion 25b.
- the wall portion 25c and the wall portion 25e are arranged in a direction in which the winding axis O1 of the secondary coil 22 extends, and the wall portion 25d and the wall portion 25f are arranged in a direction perpendicular to the winding axis O1 of the secondary coil 22. ing.
- the shape of the shield 25 is not limited to such a shape, and various shapes such as a polygonal shape, a circular liquid, and an oval shape can be employed.
- An opening is formed by the lower end of the peripheral wall 25b, and the lid 26 closes the opening.
- the power reception unit 20 includes a ferrite core 21 formed in a plate shape, a fixing member 27 that sandwiches the ferrite core 21 from above and below, a secondary coil 22 wound around the fixing member 27, and the secondary coil 22. And a capacitor 23 connected to.
- the ferrite core 21 includes a protruding portion 29a and a protruding portion 29b that protrude from the secondary coil 22 in the direction in which the winding axis O1 extends.
- the protrusion 29 a protrudes from one end side of the secondary coil 22, and the protrusion 29 b protrudes from the other end side of the secondary coil 22.
- the ferrite core 21 is formed so as to be longer than the length of the secondary coil 22 in the direction in which the winding axis O1 extends.
- FIG. 11 is an exploded perspective view showing the fixing member 27 and the ferrite core 21.
- the fixing member 27 includes an insulating piece 30 disposed on the upper surface side of the ferrite core 21 and an insulating piece 31 disposed on the lower surface side of the ferrite core 21.
- the insulating piece 30 and the insulating piece 31 are fixed to each other by a bolt 28 shown in FIG. 10 and the like, and the ferrite core 21 is sandwiched between the insulating piece 30 and the insulating piece 31.
- the insulating piece 30 and the insulating piece 31 sandwich the ferrite core 21 to protect the ferrite core 21.
- FIG. 12 is a perspective view showing the secondary coil 22.
- the secondary coil 22 includes a first end portion 35 and a second end portion 36, and the secondary coil 22 is wound from the first end portion 35 toward the second end portion 36. It surrounds the periphery of the rotating shaft O1 and is formed so as to be displaced in the extending direction of the winding shaft O1.
- the secondary coil 22 is formed by winding a coil wire a plurality of times.
- the 1st end part 35 and the 2nd end part 36 are located in the both ends of the secondary coil 22 in the direction where the winding axis O1 is extended.
- the ferrite core 21 is formed in a substantially rectangular parallelepiped shape, and the ferrite core 21 is arranged in the short side direction with an upper surface 37, a bottom surface 38 opposed to the upper surface 37 in the thickness direction. Side surface 39 and side surface 40, and end surface 41 and end surface 42 arranged in the longitudinal direction.
- the ferrite core 21 may be formed from a plurality of divided ferrite pieces.
- the secondary coil 22 has a long side portion 43 disposed on the upper surface 37, and extends downward from an end portion of the long side portion 43, and a short side portion 44 disposed on the side surface 39 and a short side portion 44.
- a long side portion 45 connected to the bottom surface 38 and a short side portion 46 connected to an end portion of the long side portion 45 and disposed on the side surface 40 are included.
- the coil wire is wound around the peripheral surface of the ferrite core 21 by one long side 43, one short side 44, one long side 45, and one short side 46.
- the secondary coil 22 is wound a plurality of times, and the secondary coil 22 includes a plurality of long side portions 43, a plurality of short side portions 44, a plurality of long side portions 45, and a plurality of short side portions 46. Including.
- One opening edge 69 a of the secondary coil 22 is formed by the short side 46 connected to the long side 45.
- the other opening edge portion 69 b is formed by the long side portion 43 connected to the short side portion 44.
- the openings 69 a and 69 b are formed at both ends of the secondary coil 22 by one winding of coil wire.
- FIG. 13 is a plan view of the secondary coil 22 in plan view. As shown in FIG. 13, a plurality of short side portions 46 are arranged in the extending direction of the winding axis O1, and similarly, a plurality of short side portions 44 are arranged in the extending direction of the winding axis O1. .
- the short side portion 44 and the short side portion 46 are disposed on the same virtual horizontal plane, and the short side portion 44 and the short side portion 46 face each other with the winding axis O1 interposed therebetween.
- the secondary coil 22 is formed to have a quadrangular shape when viewed from the front, but the coil has various shapes such as an elliptical shape, an oval shape, and a polygonal shape. Can be adopted.
- FIG. 14 is a perspective view showing a coil 200 as a model.
- the coil 200 is formed by bending the coil wire 201 so as to surround the winding axis O.
- the coil 200 is formed by winding a plurality of coil wires 201.
- the coil 200 is divided into minute portions dp having a minute length dL from the end portion 202 to the end portion 203 of the coil 200.
- FIG. 15 is a side view showing a state in which the coil 200 is divided into a plurality of minute portions dp
- FIG. 16 is a front view showing a state in which the coil 200 is divided into a plurality of minute portions dp.
- the winding axis O is derived by approximation so as to pass through the curvature center point OP and the vicinity of the curvature center point OP of each minute portion dp.
- it can be derived from various approximation methods such as linear approximation, logarithmic approximation, and polynomial approximation.
- the coil 200 shown in FIG. 14 has an equal pitch, and the winding diameter of the coil 200 is constant from the end portion 202 to the end portion 203. For this reason, since each curvature center point OP of each micro part dp is arranged on a straight line in a line, winding axis O becomes a straight line.
- the secondary coil 22 according to the present embodiment shown in FIGS. 12 and 13 is also a straight line.
- the direction in which the winding axis O1 extends from the secondary coil 22 is the direction in which the winding axis O1 extends from the center points P1, P2 of the opening surrounded by the opening edges 69a, 69b of the secondary coil 22. is there.
- the winding axis O1 is an imaginary straight line that passes through the center points P1, P2 of the opening surrounded by the opening edges 69a, 69b.
- the “region located in a direction different from the direction in which the winding axis extends from the coil” is a region located in a direction different from the direction in which the winding axis O1 extends from the center points P1, P2.
- the direction from the center point P1 toward the region R0 is different from the direction in which the winding axis O1 extends from the center point P1.
- the region R0 is included in “a region located in a direction different from the direction in which the winding axis extends from the coil”.
- FIG. 12 is an example of “a region located in a direction different from the direction in which the winding axis extends from the coil”, and “a region in a direction different from the direction in which the winding axis extends from the coil”. May be any region that satisfies the above conditions.
- FIG. 17 is a perspective view showing a state in which the power reception unit 20 and the power transmission unit 56 are arranged to face each other.
- the lid portion 26 provided in the power receiving device 11 is not illustrated.
- the power receiving unit 20 and the power transmitting unit 56 are arranged to face each other with an air gap therebetween.
- the power transmission unit 56 includes a housing 60 that houses a primary coil 58 and the like therein, a fixing member 61 that is housed in the housing 60, a ferrite core 57 that is housed in the fixing member 61, and a fixing member 61.
- a primary coil 58 mounted on the outer peripheral surface and a capacitor 59 accommodated in the housing 60 are included.
- the housing 60 includes a shield 62 formed of a metal material such as copper, and a resin lid member 63 provided on the shield 62.
- the shield 62 includes a bottom surface portion and a peripheral wall portion formed in an annular shape so as to rise upward from an outer peripheral edge portion of the bottom surface portion, and is opened upward by an upper end portion extending in an annular shape of the peripheral wall portion. An opening is formed.
- the lid member 63 is formed so as to close the opening formed by the upper end portion of the peripheral wall portion of the shield 62.
- the ferrite core 57 includes a protrusion 64a that protrudes in the direction in which the winding axis of the primary coil 58 extends, and a protrusion 64b.
- the protruding portion 64 a is formed so as to protrude from one end portion side of the primary coil 58, and the protruding portion 64 b protrudes from the other end portion side of the primary coil 58.
- the fixing member 61 includes an insulating piece arranged on the upper surface side of the ferrite core 57 and an insulating piece arranged on the lower surface side of the ferrite core 57.
- the ferrite core 57 is sandwiched between the two insulating pieces, and the two insulating pieces are fixed to each other by a fastening member such as a bolt and a nut, so that the ferrite core 57 is sandwiched between the two insulating pieces.
- the primary coil 58 is wound around the outer peripheral surface of the fixing member 61.
- the difference between the natural frequency of power transmission unit 56 and the natural frequency of power reception unit 20 is 10% or less of the natural frequency of power reception unit 20 or power transmission unit 56. is there.
- the power transmission efficiency can be increased.
- the difference between the natural frequencies becomes larger than 10% of the natural frequency of the power receiving unit 20 or the power transmitting unit 56, the power transmission efficiency becomes smaller than 10%, and the adverse effects such as the charging time of the battery 15 become longer. .
- the natural frequency of the power transmission unit 56 is that when the capacitor 59 is not provided, the electric circuit formed by the inductance of the primary coil 58 and the capacitance of the primary coil 58 freely vibrates.
- the natural frequency of the power transmission unit 56 is the vibration when the electric circuit formed by the capacitance of the primary coil 58 and the capacitor 59 and the inductance of the primary coil 58 freely vibrates.
- Means frequency In the above electric circuit, the natural frequency when the braking force and the electric resistance are zero or substantially zero is also referred to as a resonance frequency of the power transmission unit 56.
- the natural frequency of the power receiving unit 20 is that when the capacitor 23 is not provided, the electric circuit formed by the inductance of the secondary coil 22 and the capacitance of the secondary coil 22 freely vibrates.
- the natural frequency of the power receiving unit 20 is vibration when the electric circuit formed by the capacitance of the secondary coil 22 and the capacitor 23 and the inductance of the secondary coil 22 freely vibrates.
- the natural frequency when the braking force and the electric resistance are zero or substantially zero is also referred to as a resonance frequency of the power receiving unit 20.
- FIG. 18 shows a simulation model of the power transmission system.
- the power transmission system includes a power transmission device 90 and a power reception device 91, and the power transmission device 90 includes a coil 92 (electromagnetic induction coil) and a power transmission unit 93.
- the power transmission unit 93 includes a coil 94 (resonance coil) and a capacitor 95 provided in the coil 94.
- the power receiving device 91 includes a power receiving unit 96 and a coil 97 (electromagnetic induction coil).
- the power reception unit 96 includes a coil 99 and a capacitor 98 connected to the coil 99 (resonance coil).
- the inductance of the coil 94 is an inductance Lt
- the capacitance of the capacitor 95 is a capacitance C1.
- the inductance of the coil 99 is defined as inductance Lr
- the capacitance of the capacitor 98 is defined as capacitance C2.
- the horizontal axis indicates the deviation (%) of the natural frequency
- the vertical axis indicates the transmission efficiency (%) at a constant frequency.
- the deviation (%) in the natural frequency is expressed by the following equation (3).
- the power transmission efficiency can be increased. Furthermore, the power transmission efficiency can be further improved by setting the natural frequency of each power transmission unit and the power receiving unit so that the absolute value of the deviation (%) of the natural frequency is 5% or less of the natural frequency of the power receiving unit 96. I understand that I can do it.
- simulation software electromagnetic field analysis software (JMAG (registered trademark): manufactured by JSOL Corporation) is employed.
- the secondary coil 22 is disposed within a predetermined range from the primary coil 58, and the secondary coil 22 receives electric power from an electromagnetic field formed around the primary coil 58.
- the secondary coil 22 and the primary coil 58 are so-called helical coils. Therefore, a magnetic field and an electric field that vibrate at a specific frequency are formed around the primary coil 58, and the secondary coil 22 mainly receives electric power from the magnetic field.
- the “magnetic field of a specific frequency” typically has a relationship with the power transmission efficiency and the frequency of the current supplied to the primary coil 58.
- the power transmission efficiency when power is transmitted from the primary coil 58 to the secondary coil 22 varies depending on various factors such as the distance between the primary coil 58 and the secondary coil 22.
- the natural frequency (resonance frequency) of the power transmission unit 56 and the power reception unit 20 is the natural frequency f0
- the frequency of the current supplied to the primary coil 58 is the frequency f3
- the air gap be the air gap AG.
- FIG. 20 is a graph showing the relationship between the power transmission efficiency and the frequency f3 of the current supplied to the primary coil 58 when the air gap AG is changed with the natural frequency f0 fixed.
- the horizontal axis indicates the frequency f3 of the current supplied to the primary coil 58
- the vertical axis indicates the power transmission efficiency (%).
- the efficiency curve L1 schematically shows the relationship between the power transmission efficiency when the air gap AG is small and the frequency f3 of the current supplied to the primary coil 58. As shown in the efficiency curve L1, when the air gap AG is small, the peak of power transmission efficiency occurs at frequencies f4 and f5 (f4 ⁇ f5). When the air gap AG is increased, the two peaks when the power transmission efficiency is increased change so as to approach each other.
- the peak of the power transmission efficiency is one, and the power transmission efficiency is obtained when the frequency of the current supplied to the primary coil 58 is the frequency f6. Becomes a peak.
- the peak of power transmission efficiency is reduced as shown by the efficiency curve L3.
- the following first method can be considered as a method for improving the power transmission efficiency.
- the frequency of the current supplied to the primary coil 58 shown in FIG. 1 is constant, and the capacitance of the capacitor 59 and the capacitor 23 is changed in accordance with the air gap AG.
- a method of changing the characteristic of the power transmission efficiency with the unit 20 can be mentioned. Specifically, the capacitances of the capacitor 59 and the capacitor 23 are adjusted so that the power transmission efficiency reaches a peak in a state where the frequency of the current supplied to the primary coil 58 is constant. In this method, the frequency of the current flowing through the primary coil 58 and the secondary coil 22 is constant regardless of the size of the air gap AG.
- a method for changing the characteristics of the power transmission efficiency a method using a matching device provided between the power transmission device 50 and the high-frequency power driver 54, a method using the converter 14, or the like can be adopted. .
- the second method is a method of adjusting the frequency of the current supplied to the primary coil 58 based on the size of the air gap AG.
- the power transmission characteristic is the efficiency curve L ⁇ b> 1
- a current having a frequency f ⁇ b> 4 or a frequency f ⁇ b> 5 is supplied to the primary coil 58.
- the frequency characteristic becomes the efficiency curves L2 and L3
- a current having a frequency f6 is supplied to the primary coil 58.
- the frequency of the current flowing through the primary coil 58 and the secondary coil 22 is changed in accordance with the size of the air gap AG.
- the frequency of the current flowing through the primary coil 58 is a fixed constant frequency
- the frequency flowing through the primary coil 58 is a frequency that changes as appropriate according to the air gap AG.
- the first coil 58 is supplied with a current having a specific frequency set so as to increase the power transmission efficiency by the first technique, the second technique, or the like.
- a current having a specific frequency flows through the primary coil 58
- a magnetic field electromagnettic field
- the power reception unit 20 receives power from the power transmission unit 56 through a magnetic field that is formed between the power reception unit 20 and the power transmission unit 56 and vibrates at a specific frequency.
- the “magnetic field oscillating at a specific frequency” is not necessarily a magnetic field having a fixed frequency.
- the frequency of the current supplied to the primary coil 58 is set, but the power transmission efficiency is the horizontal of the primary coil 58 and the secondary coil 22. It varies depending on other factors such as a shift in direction, and the frequency of the current supplied to the primary coil 58 may be adjusted based on the other factors.
- FIG. 21 is a diagram showing the relationship between the distance from the current source or the magnetic current source and the strength of the electromagnetic field.
- the electromagnetic field is composed of 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”.
- the wavelength of the electromagnetic field is “ ⁇ ”
- the distance at which the strengths of the “radiant electromagnetic field”, the “induction electromagnetic field”, and the “electrostatic magnetic field” are approximately equal can be expressed as ⁇ / 2 ⁇ .
- the “electrostatic magnetic field” is a region where the intensity of electromagnetic waves suddenly decreases with the distance from the wave source.
- this “electrostatic magnetic field” is a dominant near field (evanescent field). ) Is used to transmit energy (electric power). That is, in the near field where the “electrostatic magnetic field” is dominant, by resonating the power transmitting unit 56 and the power receiving unit 20 (for example, a pair of LC resonance coils) having adjacent natural frequencies, the power receiving unit 56 and the other power receiving unit are resonated. Energy (electric power) is transmitted to 20. Since this "electrostatic magnetic field” does not propagate energy far away, the resonance method transmits power with less energy loss than electromagnetic waves that transmit energy (electric power) by "radiant electromagnetic field” that propagates energy far away. be able to.
- the power transmission unit and the power reception unit are referred to as a near-field resonance (resonance) coupling field, for example.
- a near-field resonance (resonance) coupling field for example.
- coupling coefficient (kappa) between a power transmission part and a power receiving part is about 0.3 or less, for example, Preferably, it is 0.1 or less.
- a coupling coefficient ⁇ in the range of about 0.1 to 0.3 can also be employed.
- the coupling coefficient ⁇ is not limited to such a value, and may take various values that improve power transmission.
- magnetic resonance coupling For example, “magnetic resonance coupling”, “magnetic field (magnetic field) resonance coupling”, “magnetic field resonance (resonance) coupling”, “near-field resonance” may be used as the coupling between the power transmitting unit 56 and the power receiving unit 20 in the power transmission of the present embodiment.
- (Resonant) coupling "
- Electromagnetic field (electromagnetic field) resonant coupling "or” Electric field (electric field) resonant coupling ".
- Electromagnetic field (electromagnetic field) resonance coupling means a coupling including any of “magnetic resonance coupling”, “magnetic field (magnetic field) resonance coupling”, and “electric field (electric field) resonance coupling”.
- the power transmission unit 56 and the power reception unit 20 mainly include:
- the power transmission unit 56 and the power reception unit 20 are “magnetic resonance coupled” or “magnetic field (magnetic field) resonance coupled”.
- an antenna such as a meander line can be used as the primary coil 58 and the secondary coil 22, and in this case, the power transmission unit 56 and the power reception unit 20 are mainly coupled by an electric field. ing. At this time, the power transmission unit 56 and the power reception unit 20 are “electric field (electric field) resonance coupled”.
- a predetermined alternating current When a predetermined alternating current is supplied to the primary coil 58, an electromagnetic field that vibrates at a predetermined frequency is formed around the primary coil 58.
- the secondary coil 22 receives power from the electromagnetic field.
- a magnetic path 65 is formed between the power reception unit 20 and the power transmission unit 56.
- the magnetic path 65 includes the protrusion 29a, the secondary coil 22, the protrusion 29b, the air gap, the protrusion 64b, the primary coil 58, the protrusion 64a, the air gap, and the protrusion 29a. It is formed to pass through.
- FIG. 22 and 23 are graphs showing the intensity distribution of the magnetic field formed around the secondary coil 22.
- FIG. 22 is a graph showing the magnetic field distribution in the extending direction of the winding axis O1.
- the horizontal axis of the graph shown in FIG. 22 indicates the distance (cm) in the direction in which the winding axis O1 extends from the wall 25c or the wall 25e shown in FIG.
- the vertical axis of the graph indicates the magnetic field strength.
- FIG. 23 is a graph showing the magnetic field distribution in the direction perpendicular to the winding axis O1.
- the horizontal axis of the graph represents the distance (cm) in the direction perpendicular to the winding axis O1 from the wall 25d or the wall 25f shown in FIG.
- the vertical axis of the graph indicates the strength of the magnetic field.
- FIGS. 22 and 23 it can be seen that a magnetic field having a high strength is distributed so as to be long in the extending direction of the winding axis O1.
- FIG. 24 and 25 are graphs showing the distribution of the electric field formed around the secondary coil 22.
- FIG. 24 is a graph showing the electric field distribution in the extending direction of the winding axis O1.
- the horizontal axis of the graph indicates the distance (cm) in the direction in which the winding axis O1 extends from the wall 25c or wall 25e shown in FIG. 10, and the vertical axis indicates the electric field strength.
- FIG. 25 is a graph showing the electric field distribution in the direction perpendicular to the winding axis O1.
- the horizontal axis indicates the distance (cm) in the direction perpendicular to the winding axis O1 from the wall 25d or wall 25f shown in FIG.
- a region R1 schematically shows a region where a magnetic field (electromagnetic field) strength occurs during power transmission.
- the magnetic field (electromagnetic field) at the time of power transmission is greater than the direction in which the winding axis O1 extends from the center points P1 and P2, and the center points P1 and P2 of the secondary coil 22. Distributed in such a manner that the strength increases in the direction in which the winding axis O1 extends.
- the “first direction” is a “direction different from the direction in which the winding axis O1 extends”
- the “second direction” is the “direction in which the winding axis O1 extends”.
- the electromagnetic field strength is high. Accordingly, it is located in the adjacent region R2 positioned in the direction in which the winding axis O1 extends from the opening surrounded by the opening edge 69a, and in the direction in which the winding axis O1 extends from the opening surrounded by the opening edge 69b. In the adjacent region R3, the electromagnetic field strength is high.
- the adjacent region R2 is a region surrounded by the virtual line L4, the virtual line L5, the virtual line L6, and the virtual line L7.
- the virtual line L4 is a virtual line extending in the direction in which the first end portion 35 or the winding axis O1 extends.
- the imaginary line L5 is an imaginary line extending in the direction in which the winding axis O1 extends from the connecting portion between the long side portion 43 and the short side portion 44.
- the imaginary line L6 is an imaginary line extending from the connecting portion between the short side portion 44 and the long side portion 45 in the direction in which the winding axis O1 extends.
- the virtual line L7 is a virtual line L7 that extends in the direction in which the winding axis O1 extends from the connecting portion between the long side portion 45 and the short side portion 46.
- the adjacent region R3 extends in the direction in which the winding axis O1 extends from the imaginary line extending in the direction in which the winding axis O1 extends from the second end portion 36 and the connecting portion between the long side portion 43 and the short side portion 44. This is an area surrounded by an extending virtual line and an imaginary line extending in the direction in which the winding axis O1 extends from the connecting portion between the short side portion 44 and the long side portion 45.
- the secondary coil 22 is arranged so that the winding axis O ⁇ b> 1 extends in the width direction D ⁇ b> 2 of the electric vehicle 10.
- the secondary coil 22 is arranged so that the winding axis O1 is oriented in the horizontal direction.
- “The winding axis O1 faces in the horizontal direction” includes both the case where the winding axis O1 extends completely in the horizontal direction and the case where the winding axis O1 substantially faces in the horizontal direction.
- the winding axis O1 being substantially in the horizontal direction means, for example, a case where the intersection angle between the virtual horizontal plane and the winding axis O1 is 10 degrees or less.
- the winding axis O1 faces in the horizontal direction is not limited to the case where the winding axis O1 faces in the width direction D2, as in the example shown in FIG. Of course.
- the rectifier 13, the converter 14, the battery 15, the power control unit 16, and the motor unit 17 are arranged in a region located in a direction different from the direction in which the winding axis O ⁇ b> 1 extends from the secondary coil 22. . For this reason, it is possible to prevent the electromagnetic field having high strength from reaching the rectifier 13, the converter 14, the battery 15, the power control unit 16, and the motor unit 17 during power transmission.
- the adjacent region R2 and the adjacent region R3 also extend in the width direction D2.
- the adjacent region R ⁇ b> 2 extends from the secondary coil 22 toward the left side surface 71.
- the adjacent region R3 extends from the secondary coil 22 toward the right side surface 72.
- the adjacent region R2 and the adjacent region R3 are regions in which high-intensity electromagnetic fields are easily formed during power transmission.
- the rectifier 13, the converter 14, the battery 15, the power control unit 16, and the motor unit 17 are arranged in a region different from the adjacent region R2 and the adjacent region R3.
- the rectifier 13, the converter 14, the battery 15, the power control unit 16, and the motor unit 17 are provided in a region located in a direction different from the direction in which the winding axis O ⁇ b> 1 extends from the secondary coil 22.
- it is provided in a region away from the adjacent region R2 and the adjacent region R3.
- Converter 14 includes a plurality of electronic components such as transistors and diodes, and by placing converter 14 in a region different from adjacent regions R2 and R3, it is possible to suppress converter 14 from being affected by an electromagnetic field.
- the electronic component includes any of passive elements such as diodes, transistors, capacitors, resistors, coils, and relays, and active elements including a plurality of passive elements.
- the battery 15 includes a plurality of battery cells 15a and electronic components such as a thermistor 15b that side-heats the temperature of the battery cells 15a.
- electronic components such as a thermistor 15b that side-heats the temperature of the battery cells 15a.
- the inverter and converter provided in the power control unit 16 include a plurality of diodes and a plurality of transistors, and are formed from a plurality of electronic components. Since the power control unit 16 is located in a region different from the adjacent regions R2 and R3, the electronic component can be prevented from being affected by the electromagnetic field.
- the motor unit 17 includes, for example, a rotating electrical machine and a photosensor 17a.
- the rotating electrical machine includes a rotor that is rotatably provided and a stator that is disposed around the rotor.
- the stator includes a stator coil, and a large amount of magnetic flux flows between the rotor and the stator.
- the photosensor 17a is an electronic device that measures the number of rotations of the rotor, and the photosensor 17a is formed of a plurality of electronic components.
- the motor unit 17 is disposed in a region different from the adjacent regions R2 and R3, the magnetic flux formed between the rotor and the stator has a great influence from the electromagnetic field formed around the power receiving unit 20.
- the photosensor 17a is also suppressed from being affected by the electromagnetic field.
- the wirings 19a to 19e connecting the electronic devices are arranged in a region different from the adjacent regions R2 and R3. For this reason, it is possible to suppress a disturbance from being applied to the current passing through the wirings 19a to 19e.
- the camera 33 is disposed on the rear side of the electric vehicle 10 with respect to the secondary coil 22, the adjacent region R2, and the adjacent region R3. For this reason, it is possible to suppress the camera 33 from being affected by the electromagnetic field formed around the secondary coil 22.
- all the electronic devices included in electric device module 100 are arranged at positions separated from adjacent regions R2 and R3, but all the electronic devices are separated from adjacent regions R2 and R3. It is not restricted to arrange
- the electric vehicle 10 has an adjacent device at least partially located in the adjacent region R2 or the adjacent region R3.
- a fuel tank 79 As a neighboring device, a fuel tank 79, a fueling part 77, a charging part 78, and an instrument housing part 101 are included.
- the instrument accommodating part 101 is a space which accommodates a jack, a repair instrument, etc.
- the auxiliary tank portion 79b of the fuel tank 79 and the fuel supply portion 77 are located in the adjacent region R2. Moreover, the instrument accommodating part 101 and the charging part 78 are located in adjacent area
- the number of electronic components included in the fuel tank 79 is smaller than the number of electronic components included in the electronic devices forming the electrical device module 100.
- the number of electronic components included in each of the oil supply unit 77, the charging unit 78, and the appliance housing unit 101 is smaller than the number of electronic components included in each of the electronic devices.
- the dead space can be effectively used by arranging the devices in the adjacent regions R2 and R3.
- FIGS. 26 to 29 The electric vehicle 10 according to the second embodiment will be described with reference to FIGS. 26 to 29.
- FIGS. 26 to 29 configurations that are the same as or correspond to the configurations shown in FIGS. 1 to 25 may be given the same reference numerals and explanation thereof may be omitted.
- FIG. 26 is a plan view schematically showing electrically powered vehicle 10 according to the second embodiment. As shown in FIG. 26, power reception unit 20 is arranged between rear wheel 19R and rear wheel 19L.
- FIG. 27 is a plan view showing the power receiving unit 20.
- 28 is a cross-sectional view taken along line XXVIII-XXVIII shown in FIG.
- the power reception unit 20 includes a ferrite core 21 and a coil unit 120 provided on the lower surface of the ferrite core 21.
- the ferrite core 21 is formed to have a rectangular shape, and as shown in FIG. 26, the ferrite core 21 is arranged to be long in the width direction D2.
- the coil unit 120 includes a coil 121 and a coil 122 arranged in the longitudinal direction of the ferrite core 21.
- the coil 121 is formed by winding a litz wire (coil wire) around a winding axis O4 extending in the vertical direction, and the litz wire is wound in a plane extending along the lower surface of the ferrite core 21. It has been turned.
- the coil 122 is formed by winding a litz wire (coil wire) around a winding axis O5 extending in the vertical direction, and the litz wire is wound in a virtual plane passing through the lower surface of the ferrite core 21. ing.
- the coil 121 and the coil 122 are both formed by winding a coil wire in a hollow shape, and the ferrite core 21 is exposed from the hollow portions of the coil 121 and the coil 122.
- FIG. 29 is a perspective view showing the power reception unit 20 and the power transmission unit 56. As shown in FIG. 29, the power transmission unit 56 is formed in the same manner as the power reception unit 20.
- the power transmission unit 56 includes a core ferrite core 126 formed in a plate shape and a coil unit 125 disposed on the upper surface of the core ferrite core 126.
- the core ferrite core 126 is also formed in a rectangular shape.
- the coil unit 125 includes a coil 123 and a coil 124 arranged in the longitudinal direction of the core ferrite core 126.
- the coil 123 is formed by winding a litz wire (coil wire) so as to surround the winding axis, and the litz wire is wound on a plane passing through the upper surface of the core ferrite core 126.
- the coil 124 is formed by winding a litz wire so as to surround the periphery of the winding shaft, and this litz wire is also wound on a plane passing through the upper surface of the core ferrite core 126.
- Each of the coil 123 and the coil 124 is formed by winding a coil wire in a hollow shape, and the core ferrite core 126 is exposed from the hollow portions of the coil 123 and the coil 124.
- the magnetic path 130 includes a hollow portion of the coil 123, an air gap, a hollow portion of the coil 121, a portion of the ferrite core 21 exposed from the hollow portion of the coil 121, and the coil 121 and the coil 122 of the ferrite core 21. It passes through the part located between. Further, the magnetic path 130 passes through a portion of the ferrite core 21 exposed from the hollow portion of the coil 122, the hollow portion of the coil 122, the air gap, and the hollow portion of the coil 124.
- the magnetic path 130 includes a portion of the ferrite core 126 exposed from the hollow portion of the coil 124, a portion of the ferrite core 126 positioned between the coil 123 and the coil 124, and a portion of the ferrite core 126. It passes through a portion exposed from the hollow portion of the coil 123.
- the power transmission efficiency between the power reception unit 20 and the power transmission unit 56 is improved.
- the electromagnetic field with high strength is distributed more widely in the arrangement direction of the coil 121 and the coil 122 than in the direction orthogonal to the arrangement direction of the coil 121 and the coil 122. Therefore, in the present embodiment, the “first direction” is “a direction orthogonal to the arrangement direction of the coil 121 and the coil 122”, and the “second direction” is “the coil 121 and the coil 122”. And the direction of arrangement ”.
- the adjacent region R2 is a region extending from the coil 121 in the arrangement direction of the coil 121 and the coil 122.
- the adjacent region R3 is a region extending from the coil 122 in the arrangement direction of the coil 121 and the coil 122.
- the rectifier 13, the converter 14, the battery 15, the power control unit 16, and the motor unit 17 are arranged in front of the electric vehicle 10 with respect to the adjacent region R 2, the adjacent region R 3, and the secondary coil 22.
- the camera 33 is arranged on the rear side of the electric vehicle 10 with respect to the adjacent region R2, the adjacent region R3, and the secondary coil 22.
- the auxiliary tank portion 79b of the fuel tank 79 and the fuel supply portion 77 are disposed in the adjacent region R3.
- the instrument housing part 101 and the charging part 78 are arranged in the adjacent region R2.
- FIGS. 30 to 41 The electric vehicle 10 according to the third embodiment will be described with reference to FIGS. 30 to 41.
- the same or corresponding components as those shown in FIGS. 1 to 29 may be given the same reference numerals and explanation thereof may be omitted.
- FIG. 30 is a plan view schematically showing electrically powered vehicle 10 according to the third embodiment.
- FIG. 31 is a plan view schematically showing the power reception unit 20.
- the power reception unit 20 includes a ferrite core 140 and a coil unit 141 wound around the ferrite core 140.
- the ferrite core 140 includes a shaft portion 146, a wide portion 145 formed at one end portion of the shaft portion 146, and a wide portion 147 provided at the other end portion of the shaft portion 146.
- the coil unit 141 is formed in a plate shape.
- the width W4 of the wide portion 145 and the width W5 of the wide portion 147 are larger than the width W3 of the shaft portion 146.
- an aluminum plate may be adopted as the power receiving unit 20 instead of the ferrite core 140.
- the coil unit 141 includes a coil 142 and a coil 143 wound around a shaft portion 146. Both the coil 142 and the coil 143 are formed so as to surround the circumference of the winding axis O1.
- the coil 142 and the coil 143 are arranged with an interval in the extending direction of the winding axis O ⁇ b> 1, and the coil 142 and the coil 143 are provided with an interval in the longitudinal direction of the shaft portion 146.
- the current can be supplied to the coil 142 and the coil 143 separately. For this reason, the direction of the current flowing through the coil 142 and the direction of the current flowing through the coil 143 can be controlled separately.
- the power receiving unit 20 can receive power not only from the same type of power transmission unit 56 but also from different types of power transmission units 56.
- FIG. 32 is a perspective view schematically showing the power reception unit 20 and the power transmission unit 56.
- the power transmission unit 56 includes a ferrite core 150, a coil unit 154 provided on the ferrite core 150, and a control unit 157.
- the ferrite core 150 includes a shaft portion 151, a wide portion 152 provided at one end portion of the shaft portion 151, and a wide portion 153 provided at the other end portion of the shaft portion 151. Note that the widths of the wide portion 152 and the wide portion 153 are larger than the width of the shaft portion 151.
- an aluminum plate may be adopted instead of the ferrite core 150.
- the coil unit 154 includes a coil 155 provided in the shaft portion 151, and a coil 156 provided in the shaft portion 151 and disposed at a distance from the coil 155.
- the direction of the current flowing through the coil 155 and the direction of the current flowing through the coil 156 can be controlled separately.
- the control unit 157 can switch (control) the flow direction of the current flowing through the coil 155 and can also switch (control) the flow direction of the current flowing through the coil 156.
- the power transmission between the power reception unit 20 and the power transmission unit 56 formed in this way will be described.
- FIG. 32 current flows in the same direction through the coil 155 and the coil 156.
- the magnetic path 158 is formed.
- the magnetic path 158 includes a wide portion 152, a coil 155, a shaft 151, a coil 156, a wide portion 153, an air gap, a wide portion 147, a coil 143, a shaft 146, and a coil. 142, the wide portion 145, and the air gap.
- a current flows through the coil 142 and the coil 143.
- the power receiving unit 20 can receive power from the power transmission unit 56 of the same type as the power receiving unit 20.
- the magnetic flux flowing between the wide part 145 and the wide part 152 spreads to some extent.
- the magnetic flux flowing between the wide part 147 and the wide part 153 also spreads to some extent.
- the power transmission unit 56 includes a ferrite core 160 and a coil 163 provided on the ferrite core 160.
- the ferrite core 160 includes a plate-like base portion 162 having a groove portion 164 formed in the central portion and a shaft portion 161 formed in the groove portion 164.
- the coil 163 is disposed in the groove portion 164 and is disposed so as to surround the shaft portion 161.
- a magnetic path 165 and a magnetic path 166 are formed.
- the magnetic path 165 passes through the shaft portion 161, the air gap, the shaft portion 146, the inside of the coil 142, the wide portion 145, the air gap, and the base portion 162.
- the magnetic path 166 passes through the shaft portion 161, the air gap, the shaft portion 146, the coil 143, the wide portion 147, the air gap, and the base portion 162.
- the power receiving unit 20 receives power from the power transmitting unit 56.
- the power receiving unit 20 as described above receives power, an electromagnetic field with high strength is widely distributed in the extending direction of the winding axis O1 of the coil 142 and the coil 143.
- the coil unit 141 is arranged so that the winding axis O1 extends in the width direction D2.
- the electromagnetic field with high strength is widely distributed in the direction in which the winding axis O1 extends from the secondary coil 22.
- an electromagnetic field with high strength is not widely distributed in the direction orthogonal to the winding axis O1.
- the “first direction” is the “direction perpendicular to the winding axis O1”
- the “second direction” is the “direction in which the winding axis O1 extends”.
- the adjacent region R2 is a region extending from the coil 143 in the direction in which the winding axis O1 extends.
- the adjacent region R3 is a region extending from the coil 142 in the direction in which the winding axis O1 extends.
- the rectifier 13, the converter 14, the battery 15, the power control unit 16, and the motor unit 17 are arrange
- the camera 33 is disposed on the rear side of the electric vehicle 10 with respect to the adjacent region R2 and the adjacent region R3, and the high-intensity electromagnetic field is prevented from reaching the camera 33.
- FIG. 34 is a plan view showing a modification of the power receiving unit 20.
- power reception unit 20 further includes an intermediate coil 149 provided between coil 142 and coil 143.
- the power transmission unit 56 includes a coil 159 provided between the coil 155 and the coil 156.
- power can be received from various power transmission units 56.
- FIG. 35 is a perspective view illustrating a state where power is transmitted between the power receiving unit 20 illustrated in FIG. 34 and the power transmitting unit 56 of the same type as the power receiving unit 20.
- a magnetic path 158 is formed between the power transmitting unit 56 and the power receiving unit 20, and the electromagnetic field is widely distributed in the extending direction of the winding axis O1.
- FIG. 36 is a perspective view illustrating a state where power is transmitted between the power receiving unit 20 illustrated in FIG. 34 and the power transmitting unit 56 of a type different from the power receiving unit 20. Also in the example shown in FIG. 36, the electromagnetic field during power transmission is widely distributed in the extending direction of the winding axis O1.
- the power receiving unit 20 shown in FIG. 34 can also receive power from various power transmitting units 56.
- a high-intensity electromagnetic field is widely distributed in the extending direction of the winding axis O1.
- the “first direction” is “the direction orthogonal to the winding axis O1”
- the “second direction” is “the direction in which the winding axis O1 extends”.
- FIGS. 37 to 41 The electric vehicle 10 according to the fourth embodiment will be described with reference to FIGS. 37 to 41.
- configurations that are the same as or correspond to the configurations shown in FIGS. 1 to 36 may be given the same reference numerals and explanation thereof may be omitted.
- FIG. 37 is a plan view schematically showing electrically powered vehicle 10 according to the fourth embodiment. As shown in FIG. 37, the power reception unit 20 is disposed between the rear wheel 19L and the rear wheel 19R.
- the power receiving unit 20 includes a ferrite core 170 and a coil unit 171 provided on the ferrite core 170.
- the ferrite core 170 includes a plurality of core pieces 173, 174, 175, and 176. One end portions of the core pieces 173, 174, 175, and 176 are connected to each other.
- the coil unit 171 includes a coil 184 wound around the core piece 173, a coil 181 wound around the core piece 174, a coil 182 wound around the core piece 175, and a coil wound around the core piece 176. 183.
- the ferrite core 170 has a cross shape.
- the ferrite core 170 is formed in a plate shape.
- the coil 184 and the coil 182 are both formed so as to surround the winding axis O1a, and the coil 184 and the coil 182 are arranged with a space in the extending direction of the winding axis O1a. Yes. Both the coil 181 and the coil 183 are formed so as to surround the winding axis O1b, and the coil 181 and the coil 183 are arranged with an interval in the extending direction of the winding axis O1b. Yes. In the example shown in FIG.
- the winding axis O1a and the winding axis O1b are orthogonal to each other, but the intersection angle between the winding axis O1a and the winding axis O1b is an acute angle or an obtuse angle. It may be.
- FIG. 39 is a perspective view illustrating a state where power is transmitted between the power receiving unit 20 illustrated in FIG. 38 and the power receiving unit 20 of the same type as the power receiving unit 20.
- the power transmission unit 56 includes a cross-shaped ferrite core 185 and a coil unit 186 provided on the ferrite core 185.
- the ferrite core 185 includes a plurality of core pieces.
- Coil unit 186 includes coils 187, 188, 189, and 190 wound around each core piece.
- a magnetic path 195 is formed between the coil 184 and the coil 187.
- a magnetic path 196 is formed between the coil 181 and the coil 188.
- a magnetic path 197 is formed between the coil 182 and the coil 189.
- a magnetic path 198 is formed between the coil 183 and the coil 190.
- a plurality of magnetic paths are formed between the power reception unit 20 and the power transmission unit 56, and the power reception unit 20 receives power from the power transmission unit 56.
- the magnetic flux swells in the extending direction of the winding axis O1a between the core piece 173 and the ferrite core 185.
- the magnetic flux swells in the extending direction of the winding axis O1a.
- the magnetic flux swells in the direction in which the winding axis O1b extends.
- the bisector of the winding axis O1a and the winding axis O1b is defined as a virtual straight line O3 and a virtual straight line O4.
- the virtual straight line O3 and the virtual straight line O4 pass through the intersection of the winding axis O1a and the winding axis O1b.
- High-intensity electromagnetic fields are widely distributed in the direction in which the winding axis O1b extends from the coils 181 and 183, and widely distributed in the direction in which the winding axis O1a extends from the coils 182 and 184.
- the “first direction” is the “direction in which the virtual straight line O3 and the virtual straight line O4 extend”
- the “second direction” is the direction in which the winding axes O1a and O1b extend. Is.
- the adjacent region R4 is a region extending from the coil 184 in the direction in which the winding axis O1a extends.
- the adjacent region R5 is a region extending from the coil 181 in the direction in which the winding axis O1b extends.
- the adjacent region R6 is a region extending from the coil 182 in the direction in which the winding axis O1a extends.
- the adjacent region R7 is a region extending from the coil 183 in the direction in which the winding axis O1b extends.
- the electronic device such as the battery 15 is disposed in a region located in a direction different from the direction in which the winding axes O1a and O1b extend from the coils 181 to 184, and adjacent regions R4, R5, R6. R7 is arranged in a different area.
- the rectifier 13, the converter 14, the battery 15, the power control unit 16, and the motor unit 17 are from any of the adjacent regions R4, R5, R6, and R7. Is also arranged on the front side of the electric vehicle 10. In the camera 33, any one of the adjacent regions R4, R5, R6, and R7 is separated to the rear side of the electric vehicle 10.
- a part of the fuel tank 79 is located in the adjacent region R3, and a part of the instrument housing portion 101 is located in the adjacent region R4.
- FIG. 40 is a perspective view showing a state when power is transmitted between the power receiving unit 20 and the power transmission unit 56.
- power transmission unit 56 includes a ferrite core 160 and a coil 163.
- the base portion 162 is formed in a plate shape, and the base portion 162 includes a groove portion 164 and a shaft portion 161 formed so as to protrude upward from the central portion of the groove portion 164.
- the coil 163 is wound around the shaft portion 161.
- magnetic paths 201 and 202 are formed between the power reception unit 20 and the power transmission unit 56.
- the magnetic path 202 passes through the shaft portion 161, the air gap, the central portion of the ferrite core 170, the inside of the coil 181, the end portion of the core piece 174, the air gap, and the ferrite core 160.
- the magnetic path 202 passes through the shaft portion 161, the air gap, the center portion of the ferrite core 170, the inside of the coil 183, the core piece 176, the air gap, and the ferrite core 160.
- a large current flows through the coil 181 and the coil 183 by forming a magnetic path between the power reception unit 20 and the power transmission unit 56.
- the power reception unit 20 receives power from the power transmission unit 56.
- the magnetic flux is widely distributed in the extending direction of the winding axis O1b.
- the electromagnetic field is widely distributed in the extending direction of the winding axis O1b.
- the electronic device such as the battery 15 is provided at a position farther from both the adjacent region R4 and the adjacent region R6, and a part of the instrument housing portion 101 is located in the adjacent region R4. ing.
- FIG. 42 is a plan view schematically showing electrically powered vehicle 10 according to the fifth embodiment.
- the power reception unit 20 is disposed so that the winding axis O ⁇ b> 1 of the secondary coil 22 faces the front-rear direction D ⁇ b> 1 of the electric vehicle 10.
- the rectifier 13, the converter 14, the battery 15, the power control unit 16, and the motor unit 17 are positioned in a direction different from the direction in which the winding axis O1 extends from the secondary coil 22. It is arranged in the area to be. Furthermore, the power receiving unit 20 is disposed so as to be offset toward the right side surface 72 side with respect to the central portion of the electric vehicle 10 in the width direction D2.
- the rectifier 13, the converter 14, the battery 15, the power control unit 16, and the motor unit 17 are disposed so as to be offset from the center in the width direction D ⁇ b> 2 of the electric vehicle 10 toward the left side 71. ing. For this reason, the rectifier 13, the converter 14, the battery 15, the power control unit 16, and the motor unit 17 are located in a region different from the adjacent regions R2 and R3. For this reason, also in the electrically powered vehicle 10 according to the fifth embodiment, it is possible to suppress an electromagnetic field having a high strength from reaching the electric device.
- FIG. 43 is a left side view showing electrically powered vehicle 10
- FIG. 44 is a perspective view schematically showing a layout of fuel tank 79, power reception unit 20, and battery 15. As shown in FIGS. 43 and 44, the fuel tank 79 is provided in front of the power receiving unit 20, and the battery 15 is disposed above the power receiving unit 20.
- the region where the battery 15 is located is located in a direction different from the direction in which the winding axis O ⁇ b> 1 extends from the secondary coil 22. For this reason, it is suppressed that a high-strength electromagnetic field reaches the battery 15.
- the area in which the battery 15 is mounted is an area different from the adjacent areas R2 and R3, and it is possible to suppress an electromagnetic field having high strength from reaching the battery 15.
- the electronic device such as the battery 15 and the adjacent regions R2 and R3 are not limited to being separated in the horizontal direction, and may be separated in the height direction.
- the battery 15 is disposed on the floor panel 49, and the power receiving unit 20 is disposed on the lower surface side of the floor panel 49. For this reason, it is possible to suppress the high-strength electromagnetic field from reaching the battery 15.
- an example using so-called electromagnetic resonance (resonance) coupling has been described.
- the present invention can also be applied to a so-called electromagnetic induction type non-contact charging method.
- An electromagnetic induction coil that transmits power from the high-frequency power driver 54 to the primary coil 58 by electromagnetic induction may be provided.
- An electromagnetic induction coil that receives electric power from the secondary coil 22 by electromagnetic induction and supplies the electric power to the rectifier 13 may be disposed.
- the present invention can be applied to a vehicle capable of non-contact power transmission.
Abstract
Description
図1は、本実施の形態1に係る受電装置と、送電装置と、電力伝送システムとを模式的に示す模式図である。
f2=1/{2π(Lr×C2)1/2}・・・(2)
ここで、インダクタンスLrおよびキャパシタンスC1,C2を固定して、インダクタンスLtのみを変化させた場合において、送電部93および受電部96の固有周波数のズレと、電力伝送効率との関係を図19に示す。なお、このシミュレーションにおいては、コイル94およびコイル99の相対的な位置関係は固定した状態であって、さらに、送電部93に供給される電流の周波数は一定である。
図19からも明らかなように、固有周波数のズレ(%)が±0%の場合には、電力伝送効率は、100%近くとなる。固有周波数のズレ(%)が±5%の場合には、電力伝送効率は、40%となる。固有周波数のズレ(%)が±10%の場合には、電力伝送効率は、10%となる。固有周波数のズレ(%)が±15%の場合には、電力伝送効率は、5%となる。すなわち、固有周波数のズレ(%)の絶対値(固有周波数の差)が、受電部96の固有周波数の10%以下の範囲となるように各送電部および受電部の固有周波数を設定することで電力伝送効率を高めることができることがわかる。さらに、固有周波数のズレ(%)の絶対値が受電部96の固有周波数の5%以下となるように、各送電部および受電部の固有周波数を設定することで電力伝送効率をより高めることができることがわかる。なお、シミュレーションソフトとしては、電磁界解析ソフトウェア(JMAG(登録商標):株式会社JSOL製)を採用している。
図1において、1次コイル58には、高周波電力ドライバ54から交流電力が供給される。この際、1次コイル58を流れる交流電流の周波数が特定の周波数となるように電力が供給されている。
図26から図29を用いて、本実施の形態2に係る電動車両10について説明する。なお、図26から図29に示す構成のうち、上記図1から図25に示す構成と同一または相当する構成については、同一の符号を付してその説明を省略する場合がある。
図30から図41を用いて、本実施の形態3に係る電動車両10について説明する。なお、図30から図41に示す構成のうち、上記図1から図29に示す構成と同一または相当する構成については、同一の符号を付してその説明を省略する場合がある。
図37から図41を用いて、本実施の形態4に係る電動車両10について説明する。なお、図37から図41に示す構成のうち、上記図1から図36に示す構成と同一または相当する構成については、同一の符号を付してその説明を省略する場合がある。
図42を用いて、本実施の形態5に係る電動車両10について説明する。図42は、本実施の形態5に係る電動車両10を模式的に示す平面図である。この図42に示すように、受電部20は、2次コイル22の巻回軸O1が電動車両10の前後方向D1に向くように配置されている。
図43および図44を用いて、本実施の形態6に係る電動車両10について説明する。図43は、電動車両10を示す左側面図であり、図44は、燃料タンク79と、受電部20と、バッテリ15とのレイアウトを模式的に示す斜視図である。この図43および図44に示すように、燃料タンク79は、受電部20の前方に設けられており、バッテリ15は、受電部20の上方に配置されている。
Claims (12)
- 外部に設けられた送電部から非接触で電力を受電する受電部(20)と、
電子機器と、
を備えた車両であって、
前記受電部(20)は巻回軸(O1)の周囲を取り囲むように形成されたコイルを含み、
前記電子機器が配置される領域は、前記コイルから前記巻回軸が延びる方向と異なる方向に位置する、車両。 - 前記コイルの端部には、開口部が形成され、
前記コイル(22)の開口部から前記巻回軸(O1)の延びる方向に延びる領域を隣接領域(R2,R3)とすると、前記電気機器は、前記隣接領域(R2,R3)と異なる領域に配置された、請求項1に記載の車両。 - 前記電子機器は、電力を蓄電可能なバッテリ(15)と、前記バッテリ(15)に接続されたPCU(Power Control Unit)と、前記PCUに接続された回転電機とのいずれかである、請求項1に記載の車両。
- 前記コイル(22)は、前記巻回軸(O1)が前記車両の幅方向に延びるように配置され、
前記電子機器は、前記コイル(22)よりも前記車両の前方側または後方側に配置された、請求項1に記載の車両。 - 車両の上方から視たときに、少なくとも一部が前記隣接領域(R2,R3)内に位置する隣接機器をさらに備えた、請求項2に記載の車両。
- 前記電子機器は、電力を蓄電可能なバッテリ(15)を含み、
前記隣接機器は、電力以外のエネルギを蓄積可能な蓄積部と、前記蓄積部に接続され、前記エネルギを供給する供給部が接続される第1接続部と、前記バッテリ(15)に接続され、電力を供給する給電部が接続される第2接続部とのいずれか1つを有する、請求項5に記載の車両。 - 前記コイル(22)は、前記巻回軸(O1)が水平方向に延びるように配置された、請求項1に記載の車両。
- 前記巻回軸(O1)は、第1巻回軸と、前記第1巻回軸と異なる方向の第2巻回軸とを含み、
前記コイルは、第1巻回軸の周囲を取り囲むように形成された第1コイルと、第2巻回軸の周囲を取り囲むように形成された第2コイルとを含み、
前記隣接領域(R2,R3)は、前記第1コイルから前記第2巻回軸が延びる方向に延びる第1隣接領域と、前記第2コイルから前記第2巻回軸が延びるに延びる第2隣接領域とを含む、請求項2に記載の車両。 - 前記送電部の固有周波数と前記受電部(20)の固有周波数との差は、前記受電部(20)の固有周波数の10%以下である、請求項1に記載の車両。
- 前記受電部(20)と前記送電部との結合係数は、0.1以下である、請求項1に記載の車両。
- 前記受電部(20)は、前記受電部(20)と前記送電部の間に形成され、かつ特定の周波数で振動する磁界と、前記受電部(20)と前記送電部の間に形成され、かつ特定の周波数で振動する電界との少なくとも一方を通じて前記送電部から電力を受電する、請求項1に記載の車両。
- 外部に設けられた送電部から非接触で電力を受電するコイルを含む受電部(20)と、
電子機器と、
を備えた車両であって、
前記受電部(20)と前記送電部との間で電力伝送をすることで形成される電磁界は、前記コイルから第1方向よりも前記第1方向と異なる第2方向に向けて広く分布し、
前記電子機器は、前記コイルから前記第2方向と異なる方向に位置する領域に配置された、車両。
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EP17185998.6A EP3269585B1 (en) | 2012-05-09 | 2012-05-09 | Vehicle comprising contactless power reception unit |
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JP2018042314A (ja) * | 2016-09-05 | 2018-03-15 | トヨタ自動車株式会社 | 車両 |
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EP3269585A1 (en) | 2018-01-17 |
CN104884295B (zh) | 2018-01-12 |
EP2848453A4 (en) | 2015-11-18 |
JP5846302B2 (ja) | 2016-01-20 |
EP2848453B1 (en) | 2017-10-11 |
EP2848453A1 (en) | 2015-03-18 |
US20150123465A1 (en) | 2015-05-07 |
EP3269585B1 (en) | 2023-03-01 |
CN104884295A (zh) | 2015-09-02 |
JPWO2013168242A1 (ja) | 2015-12-24 |
KR101750149B1 (ko) | 2017-06-22 |
KR20150015491A (ko) | 2015-02-10 |
US10286794B2 (en) | 2019-05-14 |
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