US20010002787A1 - Charging paddle - Google Patents
Charging paddle Download PDFInfo
- Publication number
- US20010002787A1 US20010002787A1 US09/727,145 US72714500A US2001002787A1 US 20010002787 A1 US20010002787 A1 US 20010002787A1 US 72714500 A US72714500 A US 72714500A US 2001002787 A1 US2001002787 A1 US 2001002787A1
- Authority
- US
- United States
- Prior art keywords
- paddle
- conductive metal
- metal member
- receptacle
- power line
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
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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
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
- B60L53/12—Inductive energy transfer
-
- 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
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/30—Constructional details of charging stations
- B60L53/34—Plug-like or socket-like devices specially adapted for contactless inductive charging of electric vehicles
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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
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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
- H02J50/70—Circuit arrangements or systems for wireless supply or distribution of electric power involving the reduction of electric, magnetic or electromagnetic leakage fields
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/12—Electric charging stations
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
Definitions
- the present invention relates to a charging paddle of an inductive charger coupling, more particularly, to a noise reduction structure of a charging paddle.
- An inductive charger coupling typically includes a receptacle and a charging paddle, which supplies electricity to the receptacle from a power source.
- FIG. 8 illustrates an inductive charger coupling, which includes a charging paddle 1 and a receptacle 6 .
- the paddle 1 is attached to the distal end of a cable 3 , which is connected to an electricity supplying apparatus 2 .
- the receptacle 6 is located in an electric vehicle 5 , which has a battery 4 . As shown by dotted line in FIG. 8, the paddle 1 is plugged into the receptacle 6 .
- the battery 4 is charged by electromagnetic induction between a coil in the paddle 1 and a coil in the receptacle 6 .
- the receptacle 6 is made of aluminum.
- the paddle 1 has shielding member made of conductive resin. When the paddle 1 is plugged into the receptacle 6 , the shielding member closes the opening of the receptacle 6 . A plurality of conductive terminals are arranged at the opening of the receptacle 6 .
- the terminals contact the shielding member. Radiation noise is absorbed by the shielding member, which is made of conductive resin, and is converted into a noise current. The noise current flows from the shielding member to a vehicle grounding terminal through the conductive terminals.
- the shielding member has a relatively high resistance.
- the noise current flowing through the shielding member is limited, which hinders noise prevention.
- a paddle of an inductive charger coupling is provided.
- the paddle is connected to a power source through a power line. Part of the power line is located in the paddle.
- the paddle is inserted into an opening of a receptacle for supplying electricity to a receptacle.
- the paddle includes a case, a conductive metal member and a conductor.
- the conductive metal member is located in the case.
- the conductive metal member absorbs noise radiated from the power line in the paddle and converts the absorbed noise into a noise current.
- the conductor conducts the noise current to the outside of the paddle.
- the conductor is electrically connected to the conductive metal member in the paddle.
- FIG. 1 is a cross-sectional view illustrating an inductive charger coupling according to a first embodiment of the present invention
- FIG. 1A is a diagrammatic side view illustrating an electricity supplying apparatus
- FIG. 2 is a cross-sectional view illustrating the charging paddle of the charger coupling shown in FIG. 1;
- FIG. 2A is an enlarged cross-sectional view of the portion 2 A of FIG. 2;
- FIG. 2B is an enlarged cross-sectional view of FIG. 2;
- FIG. 3 is a cross-sectional view illustrating one of the casing members of the charging paddle shown in FIG. 2;
- FIG. 4 is a cross-sectional view taken along line 4 - 4 of FIG. 2;
- FIG. 5 is a cross-sectional view taken along line 5 - 5 of FIG. 2;
- FIG. 6 is a partial cross-sectional view illustrating a casing members of a charging paddle according to a second embodiment of the present invention.
- FIG. 7 is a partial cross-sectional view illustrating the other casing member of the charging paddle shown in FIG. 6;
- FIG. 8 is a perspective view illustrating a prior art charger coupling for an electric vehicle.
- FIGS. 1 to 5 A first embodiment of the present invention will now be described with reference to FIGS. 1 to 5 .
- FIG. 1 illustrates a charger coupling according to the first embodiment.
- the coupling includes a receptacle 10 and a paddle 11 .
- the paddle 11 is plugged into the receptacle 10 .
- An electricity reception coil 37 of the receptacle 10 is electrically connected to a vehicle battery (not shown).
- the paddle 11 includes a casing 12 .
- the casing 12 is formed by first and second resin casing members 13 , 14 , which are welded to each other. As shown in FIGS. 2 and 3, the casing 12 includes a grip 121 and a plug portion 122 .
- a ferrite core 15 is fitted in a hole 123 of the plug portion 122 .
- the paddle 11 is connected to a shielded charging cable 16 .
- the cable 16 extends from a power source, which is an electricity supplying apparatus 42 . Part of the cable 16 is located in the grip 121 . Power lines 161 , 162 in the cable 16 extend through the grip 121 and are wound about the ferrite core 15 , which is located in the plug portion 122 .
- a substrate 17 and an antenna 20 are located on the inner surface of the first casing member 13 in the plug portion 122 .
- the antenna 20 is electrically connected to a signal line 164 , which is used for radio communication.
- An infrared sensor 18 and a communication circuit 19 are mounted on the substrate 17 .
- the communication circuit 19 activates the infrared sensor 18 .
- the substrate 17 , the infrared sensor 18 and the communication circuit 19 form an infrared transmitter-receiver.
- the communication circuit 19 is connected to a signal line 163 , which is used for infrared communication.
- the signal lines 163 , 164 are included in the cable 16 .
- magnets 21 , 22 are located in the plug portion 122 .
- the magnets 21 , 22 are used for detecting that the paddle 11 is inserted into the receptacle 10 .
- the first casing member 13 and the second casing member 14 include first and second conductive resin inner covers 23 , 26 , respectively.
- the inner covers 23 , 26 form a conductive nonmetal member, which is a container 33 in this embodiment, and are located in part of the grip 121 adjacent to the plug portion 122 .
- the inner covers 23 , 26 are integrated with the other parts of the casing members 13 , 14 (shown by rectangles in FIG. 4) by insert molding.
- the inner covers 23 , 26 form part of the casing members 13 , 14 and are exposed to form terminals.
- the first inner cover 23 includes a panel 24 and a frame 25 .
- the frame 25 is perpendicular to the panel 24 .
- a notch 251 for receiving the cable 16 is formed in the frame 25 .
- the second inner cover 26 includes a panel 27 and a frame 28 .
- a notch 281 for receiving the cable 16 is formed in the frame 28 .
- the shape and the size of the first frame 25 are substantially the same as those of the second frame 28 .
- the frames 25 , 28 contact each other when the casing members 13 , 14 are integrated.
- the edge of the frame 25 and the edge of the frame 28 are welded to each other.
- the first and second inner covers 23 , 26 form the container 33 .
- a clamp seat 30 is integrally formed with the first inner cover 23 .
- a conductive metal clamp 31 is attached to the clamp seat 30 by a screw 32 .
- the clamp 31 holds the cable 16 , which determines the position of the cable 16 in the grip 121 .
- the cable 16 enters the container 33 through the opening defined by the notches 251 , 281 , which are formed in the frames 25 , 28 (see FIG. 7).
- the clamp 31 is electrically connected to a conductive shield layer 165 , which coats the cable 16 .
- the shield layer 165 is connected to a grounding terminal (not shown) of the electricity supplying apparatus 42 .
- the power lines 161 , 162 and the signal lines 163 , 164 which are included in the cable 16 , separate in the container 33 .
- notches 252 , 253 , 254 , 255 are formed in a wall 25 A of the frame 25 , which is adjacent to the plug portion 122 .
- four notches are formed in a wall 28 A of the frame 28 , which is adjacent to the plug portion 122 .
- the notches in the wall 28 A correspond to each of the notches 252 to 255 .
- the notches 252 to 255 and the corresponding notches determine the positions of the lines 161 to 164 .
- the power lines 161 , 162 are received by the notches 252 , 253 and the corresponding notches, respectively.
- the signal lines 163 , 164 are received by the notches 254 , 255 and the corresponding notches, respectively.
- the signal line 164 is connected to the antenna 20 .
- the receptacle 10 includes an aluminum casing 34 .
- a resin inner support 35 is located in the casing 34 .
- the inner support 35 holds a ferrite core unit 36 .
- the core unit 36 includes a pair of cores 361 , 362 .
- the reception coil 37 is wound about the core 361 .
- FIG. 1 illustrates a state in which the paddle 11 is completely inserted into a cavity 101 of the receptacle 10 through an opening 102 . In this state, the ferrite core 15 of the paddle 11 is aligned with the cores 361 , 362 of the receptacle 10 .
- the vehicle battery is charged.
- the wall 25 A of the frame 25 and the wall 28 A of the frame 28 are located in the opening 102 .
- the resin inner covers 23 , 26 substantially close the opening 102 .
- a plurality of conductive metal terminals 341 are located in the wall of the opening 102 . In the state of FIG. 1, the terminals 341 elastically contact the exposed portions of the inner covers 23 , 26 .
- the casing 34 is electrically connected to a vehicle grounding terminal (not shown).
- a conductive metal member which includes first and second conductive metal plating layers 45 , 46 , is formed on part of the inner surfaces of the grip 121 .
- the first plating layer 45 is formed on the inner surface of the first inner cover 23 , the notch 251 , the clamp seat 30 and a part of the inner surface of the first casing member 13 where the clamp seat 30 is located.
- the second plating layer 46 is formed on the inner surface of the inner cover 26 , the notch 281 and a part of the inner surface of the second casing member 14 that faces the clamp seat 30 .
- the plating layers 45 , 46 are close to each other at the contacting edges of the casing members 13 , 14 , that is, between the edge of the frame 25 and the edge of the frame 28 . As shown in FIG. 5, the first plating layer 45 is connected to the shield layer 165 by the clamp 31 . In the drawings, the dots represent plating and not filler.
- an infrared sensor 38 and a communication circuit 39 are located in the inner support 35 of the receptacle 10 .
- the communication circuit 39 actuates the infrared sensor 38 .
- the infrared sensor 38 and the communication circuit 39 form an infrared transmitter-receiver.
- an antenna 40 and a communication circuit 41 are located in the inner support 35 .
- the antenna 40 and the communication circuit 41 form a radio transmitter-receiver.
- a magnetic sensor 44 is also located in the support 35 .
- the infrared sensor 38 of the receptacle 10 faces the infrared sensor 18 of the paddle 11 , and the antenna 40 of the receptacle 10 is aligned with the antenna 20 of the paddle 11 .
- one of the magnets 21 , 22 of the paddle 11 is aligned with the magnetic sensor 44 of the receptacle 10 .
- the substrate 17 , the infrared sensor 18 , the communication circuit 19 , the infrared sensor 38 and the communication circuit 39 form an infrared communication system.
- the antenna 20 , the antenna 40 and the communication circuit 41 form a radio communication system.
- the infrared communication system and the radio communication system can be selectively used.
- a controller 43 of the electricity supplying apparatus 42 which is shown in FIG. 1A, uses either the radio communication system or the infrared communication system while charging the vehicle battery. At this time, the controller 43 performs an interlock control procedure and monitors the charging state.
- the magnetic sensor 44 is turned on by either magnet 21 or 22 .
- the ON state of the magnetic sensor 44 is transmitted to the controller 43 by either the radio communication system or the infrared communication system. Accordingly, the controller starts charging and monitoring.
- the first embodiment has the following advantages.
- the power lines 161 , 162 are not covered by the shield layer 165 in the container 33 .
- Noise that is radiated from these parts of the lines 161 , 162 is absorbed by the plating layers 45 , 46 .
- the absorbed noise is then converted into a noise current that flows to the clamp 31 .
- the noise current flows from the clamp 31 to the grounding terminal of the electricity supplying apparatus 42 through the shield layer 165 .
- the container 33 is made of conductive nonmetallic material, or conductive resin.
- the plating layers 45 , 46 are made of conductive metal and are not exposed from the casing 12 of the paddle 11 .
- the container 33 and the plating layers 45 , 46 absorb noise.
- the resistance of conductive resin is relatively higher compared to conductive metals.
- the container 33 significantly limits the flow of noise current.
- the plating layers 45 , 46 permit noise current to flow with little resistance. Therefore, radiation noise produced in the paddle 11 and the receptacle 10 during charging is effectively prevented from escaping from the charger coupling.
- the plating layers 45 , 46 must be formed prior to welding the casing members 13 , 14 together.
- the edges of the casing members 13 , 14 which include the edges of the frames 25 , 28 , are welded to each other.
- the clearances are so small that the plating layers 45 , 46 are sufficiently close to each other for electrical contact.
- the plating layers 45 , 46 are electrically connected by the frames 25 , 28 . Therefore, the resistance of the clearance is negligible. Therefore, noise current in the plating layer 46 smoothly flows to the clamp 31 .
- the conductive metal member functions adequately if it includes only thin films. Therefore, the conductive metal member is preferably formed by the plating layers 45 , 46 .
- the power lines 161 , 162 and the signal lines 163 , 164 must be separated from the cable 16 somewhere in the paddle 11 . Separating the lines 161 , 162 , 163 and 164 in the plug portion 122 is difficult due to the limited space. Thus, the lines 161 , 162 , 163 and 164 are separated in the grip 121 . The surfaces of the exposed portions of the power lines 161 , 162 are difficult to cover with shield layers.
- the container 33 which is made of a conductive resin, effectively prevents noise radiated from the lines 161 , 162 from escaping.
- the walls 25 A, 28 A of the frames 25 , 28 substantially close the opening 102 and absorb radiation noise escaping from the opening 102 . Radiation noise that is not absorbed by the walls 25 A, 28 A is absorbed by the panel 24 , 27 and the part of the frames 25 , 28 other than the walls 25 A, 28 A.
- the container 33 which houses the separated power lines 161 , 162 and the signal lines 163 , 164 , has a double structure for blocking radiation noise and therefore effectively prevents radiation noise from escaping from the opening 102 .
- the conductive resin inner cover 23 is insert molded with the first casing member 13 , and the conductive resin inner cover 26 is inserted molded with the second casing member 14 .
- Conductive resin is preferred for forming the conductive nonmetal member, which includes the inner covers 23 , 26 , with the casing members 13 , 14 by insert molding.
- FIGS. 6 and 7 A second embodiment of the present invention will now be described with reference to FIGS. 6 and 7. Like or the same reference numerals are given to those components that are like or the same as the corresponding components of the embodiment of FIGS. 1 to 5 .
- a plating layer 45 A of the second embodiment is formed on the notches 252 to 255 and partly on the inner surface of the plug portion 122 of the first casing member 13 in addition to the area of the plating layer 45 of the first embodiment.
- a plating layer 46 A of the second embodiment is formed on the notches formed in the wall 28 A and partly on the inner surface of the plug portion 122 of the second casing member 14 in addition to the area of the plating layer 46 of the first embodiment.
- the plating layers 45 A, 46 A are formed on both sides of the walls 25 A, 28 A and partly on the inner surface of the plug portion 122 in addition to the area of the plating layers 45 , 46 in the first embodiment.
- the walls 25 A, 28 A substantially close the opening 102 when the paddle 11 is inserted into the receptacle 10 .
- the plating layers 45 A, 46 A prevent radiation noise from escaping from the opening 102 more effectively than the plating layers 45 , 46 .
- first inner cover 23 and the first casing member 13 may be integrally formed with a nonconductive resin
- the inner cover 26 and the second casing member 14 may be integrally formed with a nonconductive resin
- the inner covers 23 , 26 may be made of conductive metal and the plating layers 45 , 46 may be omitted.
- a conductive metal net may be embedded in each inner cover 23 , 26 and electrically connected to the shield layer 165 .
- the nets functions as part of the conductive metal member.
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- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
- Regulation Of General Use Transformers (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
Description
- The present invention relates to a charging paddle of an inductive charger coupling, more particularly, to a noise reduction structure of a charging paddle. An inductive charger coupling typically includes a receptacle and a charging paddle, which supplies electricity to the receptacle from a power source.
- FIG. 8 illustrates an inductive charger coupling, which includes a
charging paddle 1 and areceptacle 6. Thepaddle 1 is attached to the distal end of a cable 3, which is connected to anelectricity supplying apparatus 2. Thereceptacle 6 is located in anelectric vehicle 5, which has a battery 4. As shown by dotted line in FIG. 8, thepaddle 1 is plugged into thereceptacle 6. The battery 4 is charged by electromagnetic induction between a coil in thepaddle 1 and a coil in thereceptacle 6. - When electricity is supplied from the
electricity supplying apparatus 2 to the battery 4 through thepaddle 1 and thereceptacle 6, radiation noise is produced by the coils of thepaddle 1 and thereceptacle 6. The radiation noise adversely affects communication devices and other devices. To prevent radiation noise from escaping from thereceptacle 6, thereceptacle 6 is made of aluminum. Also, thepaddle 1 has shielding member made of conductive resin. When thepaddle 1 is plugged into thereceptacle 6, the shielding member closes the opening of thereceptacle 6. A plurality of conductive terminals are arranged at the opening of thereceptacle 6. When thepaddle 1 is in thereceptacle 6, the terminals contact the shielding member. Radiation noise is absorbed by the shielding member, which is made of conductive resin, and is converted into a noise current. The noise current flows from the shielding member to a vehicle grounding terminal through the conductive terminals. - However, the shielding member has a relatively high resistance. Thus, the noise current flowing through the shielding member is limited, which hinders noise prevention.
- Accordingly, it is an objective of the present invention to provide a charging paddle that effectively prevents radiation noise from escaping.
- To achieve the foregoing and other objective and in accordance with the purpose of the present invention, a paddle of an inductive charger coupling is provided. The paddle is connected to a power source through a power line. Part of the power line is located in the paddle. The paddle is inserted into an opening of a receptacle for supplying electricity to a receptacle. The paddle includes a case, a conductive metal member and a conductor. The conductive metal member is located in the case. The conductive metal member absorbs noise radiated from the power line in the paddle and converts the absorbed noise into a noise current. The conductor conducts the noise current to the outside of the paddle. The conductor is electrically connected to the conductive metal member in the paddle.
- Other aspects and advantages of the invention will become apparent from the following description, taken in conjunction with the accompanying drawings, illustrating by way of example the principles of the invention.
- The invention, together with objects and advantages thereof, may best be understood by reference to the following description of the presently preferred embodiments together with the accompanying drawings in which:
- FIG. 1 is a cross-sectional view illustrating an inductive charger coupling according to a first embodiment of the present invention;
- FIG. 1A is a diagrammatic side view illustrating an electricity supplying apparatus;
- FIG. 2 is a cross-sectional view illustrating the charging paddle of the charger coupling shown in FIG. 1;
- FIG. 2A is an enlarged cross-sectional view of the
portion 2A of FIG. 2; - FIG. 2B is an enlarged cross-sectional view of FIG. 2;
- FIG. 3 is a cross-sectional view illustrating one of the casing members of the charging paddle shown in FIG. 2;
- FIG. 4 is a cross-sectional view taken along line4-4 of FIG. 2;
- FIG. 5 is a cross-sectional view taken along line5-5 of FIG. 2;
- FIG. 6 is a partial cross-sectional view illustrating a casing members of a charging paddle according to a second embodiment of the present invention;
- FIG. 7 is a partial cross-sectional view illustrating the other casing member of the charging paddle shown in FIG. 6; and
- FIG. 8 is a perspective view illustrating a prior art charger coupling for an electric vehicle.
- A first embodiment of the present invention will now be described with reference to FIGS.1 to 5.
- FIG. 1 illustrates a charger coupling according to the first embodiment. The coupling includes a
receptacle 10 and apaddle 11. In FIG. 1, thepaddle 11 is plugged into thereceptacle 10. Anelectricity reception coil 37 of thereceptacle 10 is electrically connected to a vehicle battery (not shown). Thepaddle 11 includes acasing 12. Thecasing 12 is formed by first and secondresin casing members casing 12 includes agrip 121 and aplug portion 122. Aferrite core 15 is fitted in ahole 123 of theplug portion 122. Thepaddle 11 is connected to a shieldedcharging cable 16. Thecable 16 extends from a power source, which is anelectricity supplying apparatus 42. Part of thecable 16 is located in thegrip 121.Power lines cable 16 extend through thegrip 121 and are wound about theferrite core 15, which is located in theplug portion 122. - A
substrate 17 and anantenna 20 are located on the inner surface of thefirst casing member 13 in theplug portion 122. Theantenna 20 is electrically connected to asignal line 164, which is used for radio communication. An infrared sensor 18 and acommunication circuit 19 are mounted on thesubstrate 17. Thecommunication circuit 19 activates the infrared sensor 18. Thesubstrate 17, the infrared sensor 18 and thecommunication circuit 19 form an infrared transmitter-receiver. Thecommunication circuit 19 is connected to asignal line 163, which is used for infrared communication. The signal lines 163, 164 are included in thecable 16. As shown in FIGS. 2 and 3,magnets plug portion 122. Themagnets paddle 11 is inserted into thereceptacle 10. - As shown in FIGS. 2, 3,4 and 6, the
first casing member 13 and thesecond casing member 14 include first and second conductive resin inner covers 23, 26, respectively. The inner covers 23, 26 form a conductive nonmetal member, which is acontainer 33 in this embodiment, and are located in part of thegrip 121 adjacent to theplug portion 122. As shown in FIG. 4, the inner covers 23, 26 are integrated with the other parts of thecasing members 13, 14 (shown by rectangles in FIG. 4) by insert molding. The inner covers 23, 26 form part of thecasing members inner cover 23 includes apanel 24 and aframe 25. Theframe 25 is perpendicular to thepanel 24. Anotch 251 for receiving thecable 16 is formed in theframe 25. Like the firstinner cover 23, the secondinner cover 26 includes apanel 27 and aframe 28. Anotch 281 for receiving thecable 16 is formed in theframe 28. The shape and the size of thefirst frame 25 are substantially the same as those of thesecond frame 28. As shown in FIG. 4, theframes casing members frame 25 and the edge of theframe 28 are welded to each other. The first and second inner covers 23, 26 form thecontainer 33. - A
clamp seat 30 is integrally formed with the firstinner cover 23. Aconductive metal clamp 31 is attached to theclamp seat 30 by ascrew 32. Theclamp 31 holds thecable 16, which determines the position of thecable 16 in thegrip 121. Thecable 16 enters thecontainer 33 through the opening defined by thenotches frames 25, 28 (see FIG. 7). Theclamp 31 is electrically connected to aconductive shield layer 165, which coats thecable 16. Theshield layer 165 is connected to a grounding terminal (not shown) of theelectricity supplying apparatus 42. - As shown in FIGS.2 to 2B, the
power lines signal lines cable 16, separate in thecontainer 33. As shown in FIG. 2B,notches wall 25A of theframe 25, which is adjacent to theplug portion 122. Also, four notches are formed in awall 28A of theframe 28, which is adjacent to theplug portion 122. The notches in thewall 28A correspond to each of thenotches 252 to 255. Thenotches 252 to 255 and the corresponding notches determine the positions of thelines 161 to 164. Specifically, thepower lines notches notches signal line 164 is connected to theantenna 20. - As shown in FIG. 1, the
receptacle 10 includes analuminum casing 34. A resininner support 35 is located in thecasing 34. Theinner support 35 holds a ferrite core unit 36. The core unit 36 includes a pair of cores 361, 362. Thereception coil 37 is wound about the core 361. FIG. 1 illustrates a state in which thepaddle 11 is completely inserted into acavity 101 of thereceptacle 10 through anopening 102. In this state, theferrite core 15 of thepaddle 11 is aligned with the cores 361, 362 of thereceptacle 10. When electric current is supplied to thepower lines wall 25A of theframe 25 and thewall 28A of theframe 28 are located in theopening 102. The resin inner covers 23, 26 substantially close theopening 102. - A plurality of
conductive metal terminals 341 are located in the wall of theopening 102. In the state of FIG. 1, theterminals 341 elastically contact the exposed portions of the inner covers 23, 26. Thecasing 34 is electrically connected to a vehicle grounding terminal (not shown). - As shown in FIGS. 2, 2A and3, a conductive metal member, which includes first and second conductive metal plating layers 45, 46, is formed on part of the inner surfaces of the
grip 121. Specifically, thefirst plating layer 45 is formed on the inner surface of the firstinner cover 23, thenotch 251, theclamp seat 30 and a part of the inner surface of thefirst casing member 13 where theclamp seat 30 is located. Thesecond plating layer 46 is formed on the inner surface of theinner cover 26, thenotch 281 and a part of the inner surface of thesecond casing member 14 that faces theclamp seat 30. The plating layers 45, 46 are close to each other at the contacting edges of thecasing members frame 25 and the edge of theframe 28. As shown in FIG. 5, thefirst plating layer 45 is connected to theshield layer 165 by theclamp 31. In the drawings, the dots represent plating and not filler. - As shown in FIG. 1, an
infrared sensor 38 and acommunication circuit 39 are located in theinner support 35 of thereceptacle 10. Thecommunication circuit 39 actuates theinfrared sensor 38. Theinfrared sensor 38 and thecommunication circuit 39 form an infrared transmitter-receiver. Also, an antenna 40 and a communication circuit 41 are located in theinner support 35. The antenna 40 and the communication circuit 41 form a radio transmitter-receiver. A magnetic sensor 44 is also located in thesupport 35. When thepaddle 11 is completely inserted in thecavity 101 of thereceptacle 10, theinfrared sensor 38 of thereceptacle 10 faces the infrared sensor 18 of thepaddle 11, and the antenna 40 of thereceptacle 10 is aligned with theantenna 20 of thepaddle 11. In the state of FIG. 1, one of themagnets paddle 11 is aligned with the magnetic sensor 44 of thereceptacle 10. - The
substrate 17, the infrared sensor 18, thecommunication circuit 19, theinfrared sensor 38 and thecommunication circuit 39 form an infrared communication system. Theantenna 20, the antenna 40 and the communication circuit 41 form a radio communication system. The infrared communication system and the radio communication system can be selectively used. Acontroller 43 of theelectricity supplying apparatus 42, which is shown in FIG. 1A, uses either the radio communication system or the infrared communication system while charging the vehicle battery. At this time, thecontroller 43 performs an interlock control procedure and monitors the charging state. When thepaddle 11 is inserted into thereceptacle 10 as shown in FIG. 1, the magnetic sensor 44 is turned on by eithermagnet controller 43 by either the radio communication system or the infrared communication system. Accordingly, the controller starts charging and monitoring. - The first embodiment has the following advantages.
- In the state of FIG. 1, some of the noise radiated from the
power lines reception coil 37 in thereceptacle 10 is absorbed by thealuminum casing 34. The radiation noise is then converted into a noise current that flows to the vehicle grounding terminal. Radiation noise that heads for theopening 102 from thereceptacle 10 is absorbed by theframes opening 102. The noise is then converted into noise current that flows to theterminals 341 and theclamp 31. - The
power lines shield layer 165 in thecontainer 33. Noise that is radiated from these parts of thelines clamp 31. The noise current flows from theclamp 31 to the grounding terminal of theelectricity supplying apparatus 42 through theshield layer 165. - As described above, the
container 33 is made of conductive nonmetallic material, or conductive resin. The plating layers 45, 46 are made of conductive metal and are not exposed from thecasing 12 of thepaddle 11. Thecontainer 33 and the plating layers 45, 46 absorb noise. Generally, the resistance of conductive resin is relatively higher compared to conductive metals. Thus, thecontainer 33 significantly limits the flow of noise current. However, the plating layers 45, 46 permit noise current to flow with little resistance. Therefore, radiation noise produced in thepaddle 11 and thereceptacle 10 during charging is effectively prevented from escaping from the charger coupling. - The plating layers45, 46 must be formed prior to welding the
casing members casing members frames layer corresponding casing member frames plating layer 46 smoothly flows to theclamp 31. - The conductive metal member functions adequately if it includes only thin films. Therefore, the conductive metal member is preferably formed by the plating layers45, 46.
- The
power lines signal lines cable 16 somewhere in thepaddle 11. Separating thelines plug portion 122 is difficult due to the limited space. Thus, thelines grip 121. The surfaces of the exposed portions of thepower lines container 33, which is made of a conductive resin, effectively prevents noise radiated from thelines - The
walls frames opening 102 and absorb radiation noise escaping from theopening 102. Radiation noise that is not absorbed by thewalls panel frames walls container 33, which houses the separatedpower lines signal lines opening 102. - The conductive resin
inner cover 23 is insert molded with thefirst casing member 13, and the conductive resininner cover 26 is inserted molded with thesecond casing member 14. Conductive resin is preferred for forming the conductive nonmetal member, which includes the inner covers 23, 26, with thecasing members - A second embodiment of the present invention will now be described with reference to FIGS. 6 and 7. Like or the same reference numerals are given to those components that are like or the same as the corresponding components of the embodiment of FIGS.1 to 5.
- As shown in FIG. 6, a
plating layer 45A of the second embodiment is formed on thenotches 252 to 255 and partly on the inner surface of theplug portion 122 of thefirst casing member 13 in addition to the area of theplating layer 45 of the first embodiment. As shown in FIG. 7, aplating layer 46A of the second embodiment is formed on the notches formed in thewall 28A and partly on the inner surface of theplug portion 122 of thesecond casing member 14 in addition to the area of theplating layer 46 of the first embodiment. - As described above, the plating layers45A, 46A are formed on both sides of the
walls plug portion 122 in addition to the area of the plating layers 45, 46 in the first embodiment. Like in the first embodiment, thewalls opening 102 when thepaddle 11 is inserted into thereceptacle 10. In this state, the plating layers 45A, 46A prevent radiation noise from escaping from theopening 102 more effectively than the plating layers 45, 46. - It should be apparent to those skilled in the art that the present invention may be embodied in many other specific forms without departing from the spirit or scope of the invention. Particularly, it should be understood that the invention may be embodied in the following forms.
- In the illustrated embodiments, the first
inner cover 23 and thefirst casing member 13 may be integrally formed with a nonconductive resin, and theinner cover 26 and thesecond casing member 14 may be integrally formed with a nonconductive resin. - In the embodiment of FIGS.1 to 5, the inner covers 23, 26 may be made of conductive metal and the plating layers 45, 46 may be omitted.
- In the embodiment of FIGS.1 to 5, a conductive metal net may be embedded in each
inner cover shield layer 165. The nets functions as part of the conductive metal member. - Therefore, the present examples and embodiments are to be considered as illustrative and not restrictive and the invention is not to be limited to the details given herein, but may be modified within the scope and equivalence of the appended claims.
Claims (20)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11-343645 | 1999-12-02 | ||
JP34364599A JP2001160519A (en) | 1999-12-02 | 1999-12-02 | Noise suppressing structure of feeding paddle |
Publications (2)
Publication Number | Publication Date |
---|---|
US20010002787A1 true US20010002787A1 (en) | 2001-06-07 |
US6297614B2 US6297614B2 (en) | 2001-10-02 |
Family
ID=18363140
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/727,145 Expired - Fee Related US6297614B2 (en) | 1999-12-02 | 2000-11-30 | Charging paddle |
Country Status (2)
Country | Link |
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US (1) | US6297614B2 (en) |
JP (1) | JP2001160519A (en) |
Cited By (8)
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WO2006039145A2 (en) * | 2004-10-01 | 2006-04-13 | Stamos Thomas S | Device for draining the coronary sinus |
EP2515410A1 (en) * | 2011-04-18 | 2012-10-24 | RRC power solutions GmbH | System, device and method for inductive energy transfer |
US20130342162A1 (en) * | 2011-03-09 | 2013-12-26 | Panasonic Corporation | Contactless charging module, contactless charging device, and method of manufacturing contactless charging module |
EP2701283A4 (en) * | 2011-04-22 | 2015-06-17 | Yazaki Corp | Resonance-type non-contact power supply system |
CN107696881A (en) * | 2017-05-29 | 2018-02-16 | 南宁深通电子科技有限公司 | A kind of modified new-energy automobile charging system |
CN107696880A (en) * | 2017-05-29 | 2018-02-16 | 南宁深通电子科技有限公司 | A kind of new new-energy automobile charging system |
CN108136921A (en) * | 2015-09-30 | 2018-06-08 | 沃尔沃卡车集团 | For the charging unit of vehicle |
US11159047B2 (en) * | 2019-08-02 | 2021-10-26 | Apple Inc. | Thermally optimized RX wireless charger for small RX devices |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
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KR101094253B1 (en) * | 2008-04-28 | 2011-12-19 | 정춘길 | Non-contact power receier, non-contact power trasmitter related to the same and non-contact power transmitting and receiving system |
US8725330B2 (en) | 2010-06-02 | 2014-05-13 | Bryan Marc Failing | Increasing vehicle security |
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JP6533669B2 (en) * | 2014-03-17 | 2019-06-19 | 株式会社パナソニックシステムネットワークス開発研究所 | Electromagnetic wave simulator |
JP6405903B2 (en) * | 2014-11-05 | 2018-10-17 | トヨタ自動車株式会社 | Coil unit |
CN110667414B (en) * | 2019-10-17 | 2020-12-18 | 重庆国翰能源发展有限公司 | Anti-creeping system based on charging pile |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
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US5812357A (en) * | 1996-10-11 | 1998-09-22 | Polaroid Corporation | Electrostatic discharge protection device |
KR100218368B1 (en) * | 1997-04-18 | 1999-09-01 | 구본준 | Semiconductor package using lead frame and manufacture method of the same |
US6208255B1 (en) * | 1999-10-20 | 2001-03-27 | Larry M. Conrad | Non-resonant electromagnetic energy sensor |
-
1999
- 1999-12-02 JP JP34364599A patent/JP2001160519A/en active Pending
-
2000
- 2000-11-30 US US09/727,145 patent/US6297614B2/en not_active Expired - Fee Related
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2006039145A2 (en) * | 2004-10-01 | 2006-04-13 | Stamos Thomas S | Device for draining the coronary sinus |
WO2006039145A3 (en) * | 2004-10-01 | 2009-04-09 | Thomas S Stamos | Device for draining the coronary sinus |
US20130342162A1 (en) * | 2011-03-09 | 2013-12-26 | Panasonic Corporation | Contactless charging module, contactless charging device, and method of manufacturing contactless charging module |
US8749195B2 (en) * | 2011-03-09 | 2014-06-10 | Panasonic Corporation | Contactless charging module, contactless charging device, and method of manufacturing contactless charging module |
US8963491B2 (en) | 2011-03-09 | 2015-02-24 | Panasonic Intellectual Property Management Co., Ltd. | Contactless charging module, contactless charging device, and method of manufacturing contactless charging module |
EP2515410A1 (en) * | 2011-04-18 | 2012-10-24 | RRC power solutions GmbH | System, device and method for inductive energy transfer |
EP2701283A4 (en) * | 2011-04-22 | 2015-06-17 | Yazaki Corp | Resonance-type non-contact power supply system |
CN108136921A (en) * | 2015-09-30 | 2018-06-08 | 沃尔沃卡车集团 | For the charging unit of vehicle |
CN107696881A (en) * | 2017-05-29 | 2018-02-16 | 南宁深通电子科技有限公司 | A kind of modified new-energy automobile charging system |
CN107696880A (en) * | 2017-05-29 | 2018-02-16 | 南宁深通电子科技有限公司 | A kind of new new-energy automobile charging system |
US11159047B2 (en) * | 2019-08-02 | 2021-10-26 | Apple Inc. | Thermally optimized RX wireless charger for small RX devices |
Also Published As
Publication number | Publication date |
---|---|
US6297614B2 (en) | 2001-10-02 |
JP2001160519A (en) | 2001-06-12 |
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